diff --git a/core/assets/vendor/jquery-form/jquery.form.js b/core/assets/vendor/jquery-form/jquery.form.js
index 8ca137af697be8a8de38d8e3c280ac1f8085c546..92e0e1ff10d01d76923633b3b8e06d31d732db08 100644
--- a/core/assets/vendor/jquery-form/jquery.form.js
+++ b/core/assets/vendor/jquery-form/jquery.form.js
@@ -1,7 +1,7 @@
 /*!
  * jQuery Form Plugin
- * version: 3.39.0-2013.07.31
- * @requires jQuery v1.5 or later
+ * version: 3.50.0-2014.02.05
+ * Requires jQuery v1.5 or later
  * Copyright (c) 2013 M. Alsup
  * Examples and documentation at: http://malsup.com/jquery/form/
  * Project repository: https://github.com/malsup/form
@@ -9,7 +9,20 @@
  * https://github.com/malsup/form#copyright-and-license
  */
 /*global ActiveXObject */
-;(function($) {
+
+// AMD support
+(function (factory) {
+    "use strict";
+    if (typeof define === 'function' && define.amd) {
+        // using AMD; register as anon module
+        define(['jquery'], factory);
+    } else {
+        // no AMD; invoke directly
+        factory( (typeof(jQuery) != 'undefined') ? jQuery : window.Zepto );
+    }
+}
+
+(function($) {
 "use strict";
 
 /*
@@ -63,11 +76,13 @@ var hasProp = !!$.fn.prop;
 // contains inputs with names like "action" or "method"; in those
 // cases "prop" returns the element
 $.fn.attr2 = function() {
-    if ( ! hasProp )
+    if ( ! hasProp ) {
         return this.attr.apply(this, arguments);
+    }
     var val = this.prop.apply(this, arguments);
-    if ( ( val && val.jquery ) || typeof val === 'string' )
+    if ( ( val && val.jquery ) || typeof val === 'string' ) {
         return val;
+    }
     return this.attr.apply(this, arguments);
 };
 
@@ -209,7 +224,7 @@ $.fn.ajaxSubmit = function(options) {
 
     // [value] (issue #113), also see comment:
     // https://github.com/malsup/form/commit/588306aedba1de01388032d5f42a60159eea9228#commitcomment-2180219
-    var fileInputs = $('input[type=file]:enabled:not([value=""])', this);
+    var fileInputs = $('input[type=file]:enabled', this).filter(function() { return $(this).val() !== ''; });
 
     var hasFileInputs = fileInputs.length > 0;
     var mp = 'multipart/form-data';
@@ -245,8 +260,9 @@ $.fn.ajaxSubmit = function(options) {
     $form.removeData('jqxhr').data('jqxhr', jqxhr);
 
     // clear element array
-    for (var k=0; k < elements.length; k++)
+    for (var k=0; k < elements.length; k++) {
         elements[k] = null;
+    }
 
     // fire 'notify' event
     this.trigger('form-submit-notify', [this, options]);
@@ -278,9 +294,11 @@ $.fn.ajaxSubmit = function(options) {
 
         if (options.extraData) {
             var serializedData = deepSerialize(options.extraData);
-            for (i=0; i < serializedData.length; i++)
-                if (serializedData[i])
+            for (i=0; i < serializedData.length; i++) {
+                if (serializedData[i]) {
                     formdata.append(serializedData[i][0], serializedData[i][1]);
+                }
+            }
         }
 
         options.data = null;
@@ -312,11 +330,18 @@ $.fn.ajaxSubmit = function(options) {
         }
 
         s.data = null;
-            var beforeSend = s.beforeSend;
-            s.beforeSend = function(xhr, o) {
+        var beforeSend = s.beforeSend;
+        s.beforeSend = function(xhr, o) {
+            //Send FormData() provided by user
+            if (options.formData) {
+                o.data = options.formData;
+            }
+            else {
                 o.data = formdata;
-                if(beforeSend)
-                    beforeSend.call(this, xhr, o);
+            }
+            if(beforeSend) {
+                beforeSend.call(this, xhr, o);
+            }
         };
         return $.ajax(s);
     }
@@ -335,10 +360,12 @@ $.fn.ajaxSubmit = function(options) {
             // ensure that every serialized input is still enabled
             for (i=0; i < elements.length; i++) {
                 el = $(elements[i]);
-                if ( hasProp )
+                if ( hasProp ) {
                     el.prop('disabled', false);
-                else
+                }
+                else {
                     el.removeAttr('disabled');
+                }
             }
         }
 
@@ -348,10 +375,12 @@ $.fn.ajaxSubmit = function(options) {
         if (s.iframeTarget) {
             $io = $(s.iframeTarget);
             n = $io.attr2('name');
-            if (!n)
-                 $io.attr2('name', id);
-            else
+            if (!n) {
+                $io.attr2('name', id);
+            }
+            else {
                 id = n;
+            }
         }
         else {
             $io = $('<iframe name="' + id + '" src="'+ s.iframeSrc +'" />');
@@ -383,12 +412,15 @@ $.fn.ajaxSubmit = function(options) {
 
                 $io.attr('src', s.iframeSrc); // abort op in progress
                 xhr.error = e;
-                if (s.error)
+                if (s.error) {
                     s.error.call(s.context, xhr, e, status);
-                if (g)
+                }
+                if (g) {
                     $.event.trigger("ajaxError", [xhr, s, e]);
-                if (s.complete)
+                }
+                if (s.complete) {
                     s.complete.call(s.context, xhr, e);
+                }
             }
         };
 
@@ -475,11 +507,14 @@ $.fn.ajaxSubmit = function(options) {
         // take a breath so that pending repaints get some cpu time before the upload starts
         function doSubmit() {
             // make sure form attrs are set
-            var t = $form.attr2('target'), a = $form.attr2('action');
+            var t = $form.attr2('target'),
+                a = $form.attr2('action'),
+                mp = 'multipart/form-data',
+                et = $form.attr('enctype') || $form.attr('encoding') || mp;
 
             // update form attrs in IE friendly way
             form.setAttribute('target',id);
-            if (!method) {
+            if (!method || /post/i.test(method) ) {
                 form.setAttribute('method', 'POST');
             }
             if (a != s.url) {
@@ -504,14 +539,16 @@ $.fn.ajaxSubmit = function(options) {
                 try {
                     var state = getDoc(io).readyState;
                     log('state = ' + state);
-                    if (state && state.toLowerCase() == 'uninitialized')
+                    if (state && state.toLowerCase() == 'uninitialized') {
                         setTimeout(checkState,50);
+                    }
                 }
                 catch(e) {
                     log('Server abort: ' , e, ' (', e.name, ')');
                     cb(SERVER_ABORT);
-                    if (timeoutHandle)
+                    if (timeoutHandle) {
                         clearTimeout(timeoutHandle);
+                    }
                     timeoutHandle = undefined;
                 }
             }
@@ -539,10 +576,12 @@ $.fn.ajaxSubmit = function(options) {
                 if (!s.iframeTarget) {
                     // add iframe to doc and submit the form
                     $io.appendTo('body');
-                    if (io.attachEvent)
-                        io.attachEvent('onload', cb);
-                    else
-                        io.addEventListener('load', cb, false);
+                }
+                if (io.attachEvent) {
+                    io.attachEvent('onload', cb);
+                }
+                else {
+                    io.addEventListener('load', cb, false);
                 }
                 setTimeout(checkState,15);
 
@@ -557,6 +596,7 @@ $.fn.ajaxSubmit = function(options) {
             finally {
                 // reset attrs and remove "extra" input elements
                 form.setAttribute('action',a);
+                form.setAttribute('enctype', et); // #380
                 if(t) {
                     form.setAttribute('target', t);
                 } else {
@@ -598,13 +638,16 @@ $.fn.ajaxSubmit = function(options) {
 
             if (!doc || doc.location.href == s.iframeSrc) {
                 // response not received yet
-                if (!timedOut)
+                if (!timedOut) {
                     return;
+                }
             }
-            if (io.detachEvent)
+            if (io.detachEvent) {
                 io.detachEvent('onload', cb);
-            else
+            }
+            else {
                 io.removeEventListener('load', cb, false);
+            }
 
             var status = 'success', errMsg;
             try {
@@ -631,11 +674,12 @@ $.fn.ajaxSubmit = function(options) {
                 var docRoot = doc.body ? doc.body : doc.documentElement;
                 xhr.responseText = docRoot ? docRoot.innerHTML : null;
                 xhr.responseXML = doc.XMLDocument ? doc.XMLDocument : doc;
-                if (isXml)
+                if (isXml) {
                     s.dataType = 'xml';
+                }
                 xhr.getResponseHeader = function(header){
                     var headers = {'content-type': s.dataType};
-                    return headers[header];
+                    return headers[header.toLowerCase()];
                 };
                 // support for XHR 'status' & 'statusText' emulation :
                 if (docRoot) {
@@ -695,40 +739,52 @@ $.fn.ajaxSubmit = function(options) {
 
             // ordering of these callbacks/triggers is odd, but that's how $.ajax does it
             if (status === 'success') {
-                if (s.success)
+                if (s.success) {
                     s.success.call(s.context, data, 'success', xhr);
+                }
                 deferred.resolve(xhr.responseText, 'success', xhr);
-                if (g)
+                if (g) {
                     $.event.trigger("ajaxSuccess", [xhr, s]);
+                }
             }
             else if (status) {
-                if (errMsg === undefined)
+                if (errMsg === undefined) {
                     errMsg = xhr.statusText;
-                if (s.error)
+                }
+                if (s.error) {
                     s.error.call(s.context, xhr, status, errMsg);
+                }
                 deferred.reject(xhr, 'error', errMsg);
-                if (g)
+                if (g) {
                     $.event.trigger("ajaxError", [xhr, s, errMsg]);
+                }
             }
 
-            if (g)
+            if (g) {
                 $.event.trigger("ajaxComplete", [xhr, s]);
+            }
 
             if (g && ! --$.active) {
                 $.event.trigger("ajaxStop");
             }
 
-            if (s.complete)
+            if (s.complete) {
                 s.complete.call(s.context, xhr, status);
+            }
 
             callbackProcessed = true;
-            if (s.timeout)
+            if (s.timeout) {
                 clearTimeout(timeoutHandle);
+            }
 
             // clean up
             setTimeout(function() {
-                if (!s.iframeTarget)
+                if (!s.iframeTarget) {
                     $io.remove();
+                }
+                else { //adding else to clean up existing iframe response.
+                    $io.attr('src', s.iframeSrc);
+                }
                 xhr.responseXML = null;
             }, 100);
         }
@@ -756,8 +812,9 @@ $.fn.ajaxSubmit = function(options) {
                 data = xml ? xhr.responseXML : xhr.responseText;
 
             if (xml && data.documentElement.nodeName === 'parsererror') {
-                if ($.error)
+                if ($.error) {
                     $.error('parsererror');
+                }
             }
             if (s && s.dataFilter) {
                 data = s.dataFilter(data, type);
@@ -830,7 +887,7 @@ function doAjaxSubmit(e) {
     var options = e.data;
     if (!e.isDefaultPrevented()) { // if event has been canceled, don't proceed
         e.preventDefault();
-        $(this).ajaxSubmit(options);
+        $(e.target).ajaxSubmit(options); // #365
     }
 }
 
@@ -889,8 +946,23 @@ $.fn.formToArray = function(semantic, elements) {
     }
 
     var form = this[0];
+    var formId = this.attr('id');
     var els = semantic ? form.getElementsByTagName('*') : form.elements;
-    if (!els) {
+    var els2;
+
+    if (els && !/MSIE [678]/.test(navigator.userAgent)) { // #390
+        els = $(els).get();  // convert to standard array
+    }
+
+    // #386; account for inputs outside the form which use the 'form' attribute
+    if ( formId ) {
+        els2 = $(':input[form=' + formId + ']').get();
+        if ( els2.length ) {
+            els = (els || []).concat(els2);
+        }
+    }
+
+    if (!els || !els.length) {
         return a;
     }
 
@@ -913,15 +985,17 @@ $.fn.formToArray = function(semantic, elements) {
 
         v = $.fieldValue(el, true);
         if (v && v.constructor == Array) {
-            if (elements)
+            if (elements) {
                 elements.push(el);
+            }
             for(j=0, jmax=v.length; j < jmax; j++) {
                 a.push({name: n, value: v[j]});
             }
         }
         else if (feature.fileapi && el.type == 'file') {
-            if (elements)
+            if (elements) {
                 elements.push(el);
+            }
             var files = el.files;
             if (files.length) {
                 for (j=0; j < files.length; j++) {
@@ -934,8 +1008,9 @@ $.fn.formToArray = function(semantic, elements) {
             }
         }
         else if (v !== null && typeof v != 'undefined') {
-            if (elements)
+            if (elements) {
                 elements.push(el);
+            }
             a.push({name: n, value: v, type: el.type, required: el.required});
         }
     }
@@ -1031,10 +1106,12 @@ $.fn.fieldValue = function(successful) {
         if (v === null || typeof v == 'undefined' || (v.constructor == Array && !v.length)) {
             continue;
         }
-        if (v.constructor == Array)
+        if (v.constructor == Array) {
             $.merge(val, v);
-        else
+        }
+        else {
             val.push(v);
+        }
     }
     return val;
 };
@@ -1068,7 +1145,7 @@ $.fieldValue = function(el, successful) {
             if (op.selected) {
                 var v = op.value;
                 if (!v) { // extra pain for IE...
-                    v = (op.attributes && op.attributes['value'] && !(op.attributes['value'].specified)) ? op.text : op.value;
+                    v = (op.attributes && op.attributes.value && !(op.attributes.value.specified)) ? op.text : op.value;
                 }
                 if (one) {
                     return v;
@@ -1124,8 +1201,9 @@ $.fn.clearFields = $.fn.clearInputs = function(includeHidden) {
             //  $('#myForm').clearForm('.special:hidden')
             // the above would clean hidden inputs that have the class of 'special'
             if ( (includeHidden === true && /hidden/.test(t)) ||
-                 (typeof includeHidden == 'string' && $(this).is(includeHidden)) )
+                 (typeof includeHidden == 'string' && $(this).is(includeHidden)) ) {
                 this.value = '';
+            }
         }
     });
 };
@@ -1184,8 +1262,9 @@ $.fn.ajaxSubmit.debug = false;
 
 // helper fn for console logging
 function log() {
-    if (!$.fn.ajaxSubmit.debug)
+    if (!$.fn.ajaxSubmit.debug) {
         return;
+    }
     var msg = '[jquery.form] ' + Array.prototype.join.call(arguments,'');
     if (window.console && window.console.log) {
         window.console.log(msg);
@@ -1195,4 +1274,5 @@ function log() {
     }
 }
 
-})( (typeof(jQuery) != 'undefined') ? jQuery : window.Zepto );
+}));
+
diff --git a/core/core.libraries.yml b/core/core.libraries.yml
index df503dc6189011ba5c81d423981339db1a23a267..fb13d9c45128f389774f2c36b480f31f992d3943 100644
--- a/core/core.libraries.yml
+++ b/core/core.libraries.yml
@@ -310,12 +310,11 @@ jquery.farbtastic:
 
 jquery.form:
   remote: https://github.com/malsup/form
-  version: 3.39
+  version: 3.50
   js:
     assets/vendor/jquery-form/jquery.form.js: {}
   dependencies:
     - core/jquery
-    - core/jquery.cookie
 
 jquery.intrinsic:
   version: VERSION