Update several files for "this ..." translations

Within this commit, several files got updated to split up strings like "Disable for this team" / "Disable for this department" into "Disable for" and "this team"/"this department".
So a) a little bit less translations and b) all strings of "this (ticket|task|API|canned|FAQ|depart|email|group|site|SLA|agent|team|template|help|ban|category|custom|end user|role)" can match already existing "this ..." translations now.
PS: Didn't remove all that whitespaces in include/staff/tpl.inc.php - seems like my php editor app has done that automatically :/