added some expressions (were not in german file)

MOD_JEM_OCCURING_IN="Kommende Events in Anzahl Tagen"
MOD_JEM_OCCURING_IN_DESC="Wenn gesetzt, erscheinen nur Veranstaltungen, die nach der angegebenen Anzahl von Tagen stattfinden."
MOD_JEM_OPEN_DATE="Datum noch offen"
altered event model admin for frontend image upload again

Now the correct fix.
Setting root category to published to be consistent with Joomla's
categories
Fix SQL error in categoriesdetailed print view
Include Print.css to print popup (several views) #527
Added print button to categories view
Merge remote-tracking branch 'origin/master' into development