Added a configuration form for the chat block, and made the chat window title and the transmission method configurables in the block settings

[PATCH]: #2026805 - Added compatibility with all nodejs versions to avoid the WSOD ' Trying to get property of non-object dans Chat->getUids()'

Removed temporal replacement for nodejs_get_add_channel(), as function has been fixed now in nodejs module.

replaced all instances of 'username' with 'name', for consistency. Notify all users when a user inits session on the chat from the browser, and added the user's piture to currentUser data in Drupal.settings

fixing badly placed call to add_user_to_channel. It should be placed after the content_token  has been sent.

#1950862: fixed bug that forced the first user of a chat to reload the page in order to get it working properly. Nodejs can't add users to a channel until they've been authenticated by the server, which happens after page load. Also fixed default avatar path

removed old TODO, improved documentation on the __construct method, and added support for the actual chat name, which wasn't being used yet.

changed the default avatar uri to be in the Drupal.settings object instead of the old, site-dependent, awkward hardcoded string.

minor refactoring of the event handlers for message submission. Removed to commented console.log calls

replaced preg_filter with preg_replace, as it prevents the channel_id from being set when the proposed name doesn't have unwanted characters (e.g homepage)

Removed legacy function to add the js assets, and changed avatar dimensions for the users markup in the .js file

some refactoring for the jquery growl notifications, and removed them from the default behavior. They can be enabled on the Chat settings, when instantiating the class.

quick fix: encoding htmlentities before transmitting them. Don't really want xss attacks through a chat.

minor changes to .info file, added theme hook implementation for connected users, removed some code from the Chat class that is not needed anymore, as users are themed on a theme function. Some javascript changes for the user boxes classes

inline, temporary css to prevent the chat from growing endlessly, and js to scroll to the last comment every time a new comment is added.

Support for multiple chats in the same page: Added a settings property to the Chat class to send settings for each chat window to the browser, turned some css ids into classes and refactored javascript to bind events to all chat panes. Also, added support for the transmission of messages through the extension for the nodejs server

quick fixes for the connected users list, custo response codes for the channel creation added, and confirmation / error messages to the Chat.inc constructor

got rid of the initial one-on-one chat stuff, since it was just for testing. Implemented block_info and block_view hooks

Make sure each generated channel ID is unique for the current page request. Now channel ids are transliterated into valid CSS ids.