QuestHistory (Tenvans Mod)

this is a Mod of Jasters QuestHistory-Addon http://curse-gaming.com/mod.php?addid=81

i have following things modified:

- Translation for german client (french possible, if someone translate the localization.lua)
- automated rapair of wrong quest-log-entries
- a new button in quest-details, which allows to mark a quest manually as completed