#1244876 by dereine: Let views_handler_argument_vocabulary_vid utilize the features of views_handler_argument_numeric

Conflicts:

	includes/plugins.inc

#1225322 by pcambra: Allow to submit/validate form elements placed in area handlers (header, footer, empty)

Add uses_exposed_form_in_block() method to the display so that CTools can specifically make content panes have exposed form in a block.

#1207680 by damz: Don't validate if there are no options set, the values are empty and required is not set

This reverts commit 15e9dfaa.

#1207680 by dereine: Don't validate on term filters, because this causes views to not to save anymore