QUEST: The Goblin Tailor

CORE: Add functions to calculate the RSE location and race of the week
SCRIPTS: Update treasure chest of Ordelle's Caves, Gusgen Mines and Maze
of Shakhrami to obtain the keyitem Magic Pattern if you're in the
correct location and race of the week
SCRIPTS: Update Guttrix lua to give the quest and all the pieces of the
RSE gear, only the first time the quest is completed. If you drop any
piece of the RSE gear, Guttrix offer again in your RSE race week.
Merge pull request #165 from santssoft/TheGoblinTailor

QUEST: The Goblin Tailor
CORE: guild sell price changes
guild will not buy items if their inventory is full
Merge branch 'master' of https://github.com/DarkstarProject/darkstar
CORE: fixed typo in cc92de44c90b5ea9d74bde7229a7594a0dc56dc1