Auswahlfeld für Sprache beim Syntax-Highlighting
Merge branch 'master' of https://github.com/SSilence/sum

Conflicts:
	app/index.html
	app/main.css
	app/sum-frontend-events.js
	app/sum-frontend-helpers.js
	app/sum-frontend.js
Merge branch 'master' of https://github.com/SSilence/sum

Conflicts:
	app/index.html
	app/main.css
	app/sum-frontend-events.js
	app/sum-frontend.js
Beim klick auf "Konversation löschen" das Menü schließen
- User stay in sum when offline (status "offline" -> red button)
- User stay in sum until the configured time (config.js : user_remove) is arrived
- When user is removed and the currentConversation is from the removed user, switch to "room_all"
- ClickHandler for notifications -> show sum
Merge pull request #14 from DaAndi82/master

User stay in SUM