Fix Quest "The First Trial" (9678)

Sangrias Stillblade will be spawned and attack the player after light the brazier. With this the blood elf paladins can proceed further in their paladin class quest.

http://www.wowhead.com/quest=9678
https://www.youtube.com/watch?v=IFcdAWWEM4I#t=2m25s
https://www.youtube.com/watch?v=KQgvQUeBKrA

Maybe there is a more elegant solution via DB scripts possible?

The script_texts id (-1177161) was chosen by me. Maybe there is a better one.


ToDo's
- Sangrias Stillblade is missing his polearm. It has the same model like chillpike (http://www.wowhead.com/item=13148#modelviewer). But I'm unable to find a source, that confirms which weapon he actually carries.
- Fix charge animation. Seems like an issue of the core, because every creature which uses a charge ability have the same problem.


If you intent to accept this pull request, remember to set the correct revision number for the update sql files.


Script adapted from http://stormrage.tomsk.ru/hg/trinitycore/raw-file/46613e106bcd/src/server/scripts/World/go_scripts.cpp