Merge branch 'develop' into Features/chat
* Working on creation
*  working on creation and notifications
* Added several features, discussion delete, add and leave + context_menu
* Small edit
* Edited send event (no linebreak shown)
* Added start of properties windows
* Worked on notifications for chat, improved user experience
* Started working on file sharing improving
Merge branch 'Features/chat' into develop
* Bugfix : Corrected problem with user search for discussions
Merge branch 'develop' into Features/file_sharing

Conflicts:
	Public/Apps/Common/main.js