Update ACP Part 1:
- acp/attachments.php
- acp/ban.php
- acp/board.php
- acp/common.php
Update part 2
Update part 3
Leerzeichen vor Tabs entfernt
Update part 4
Add new language files
Add new email templates
Add common.php from PhilppK
Fix whitespace Fehler
Merge pull request #1 from nickvergessen/update-3.1.0-b2

Update 3.1.0-b2