Fixed missing validation
Made the detailes user activity list more userfriendly

* Slightly changed the order of the columns (first the type).
* Removed "object" from all titles

See: http://beta.woltlab.com/index.php/Thread/585-Punkte-anzeigen/
Fixed i18n issue
Merge pull request #199 from wbbaddons/detailedActivityPointList_userfriendly

Made the detailes user activity list more userfriendly