Add visual notification if auto-scrolling is disabled

Closes #23
Add GunbanCommand and GunmuteCommand
Move admin group options to admin.community
Fix GunmuteCommand
Format message.tpl and replace that ugly ascii arrow with a proper icon
Fix dropdown when switching to fullscreen
Use tabs to indent
Use tabs to indent #2

Missed that one…
Make design usable
Forbid editing of temprooms in ACP
Allow autocompletion of commands
Read out available commands
Fix ChatPage
Insert whisper command when hitting the icon
Add jsTooltip to whisper icon
Merge branch 'master' into flexBox

Conflicts:
	file/style/be.bastelstu.wcf.chat.less