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 '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
Merge branch 'master' of github.com:vanilla/vanilla into stage
Conversations: simplify new translations
Fix docblocks in ConversationModel
Merge pull request #1919 from vanilla/feature/pmfloodcontrol

Feature/pmfloodcontrol
Merge pull request #1913 from vanilla/feature/markdown

Feature/markdown
Version minor increment for cache
Merge branch 'stage' of github.com:vanilla/vanilla into stage
Merge branch 'hotfix/fb-auth-embed-redirect' into stage