clean up comment widgets
merge with remote
Merge pull request #179 from humhub/master

Merge master changes to develop
Initial commit of the mention widget for users, spaces and emojis
Integrated small text formatting option
File module optimizations
Prevent httpd from serving dotfiles (.htaccess, .svn, .git, etc.
Allow specifc file extension instead of define forbidden (#146)
File uploader cleanups, allow files also in comments
Integrate summer note text editor
Mentioning Search
Optimized mention plugin and removed editor functions
Merge branch 'feature/mention' into develop
Merge branch 'develop' of https://github.com/humhub/humhub into develop

Conflicts:
	protected/modules_core/comment/widgets/views/form.php
	protected/modules_core/wall/widgets/views/contentForm.php
Added result type to mentioning search
Removed gitmodules
Merge branch 'develop' of https://github.com/humhub/humhub into develop
Connected new search for user and spaces to mention widget
Merge branch 'master' into develop
Updated Mention Widget to displayed well in activities, notifications and mails