Updating core text area autosizing library.
Introduced textarea autosizing functionality to missing areas of forum, such as on profile and in the dashboard, by including query.autosize.min.js file. The entire forum should now automatically resize all textareas. Made sure that the JS for loading this functionality is all in one place (global.js).
Removed livequery dependency for loading textarea autosizing. Using pertinent events for binding functionality instead. Updated gdn.autosize wrapper to more intelligently decide when to attach and when to trigger a resize.
Merge branch 'master' of github.com:vanillaforums/Garden into stage
Merge branch 'stage' of github.com:vanillaforums/Garden into stage
Merge branch 'feature/autogrow-js-modern' of github.com:vanilla/vanilla into stage

Conflicts:
	applications/dashboard/controllers/class.dashboardcontroller.php
Markdown vendor upgrade
Markdown: change default to preserve newlines
Conversations: Add MaxRecipients logic for AddPeople module
Conversations: implement MaxRecipients in Add form
Conversations: implement MaxRecipients in tokenizer
Conversations: tokenLimit fixes
Conversations: Add inheritance w/CheckForSpam; fix count bugs
Merge branch 'stage' of github.com:vanilla/vanilla into feature/pmfloodcontrol

Conflicts:
	applications/conversations/js/conversations.js
Updated some return value docs to help with autocomplete.
Merge branch 'master' of github.com:vanilla/vanilla into stage
AttachmentModel: Initial Commit
AttachmentModel: add needed style to global style.css
Conversations: simplify new translations
Fix docblocks in ConversationModel