Fixed gcc build without pch
Core/Maps: Fixed crash caused by using invalid coordinates

Closes #12532
DB/Creature: Skorn Whitecloud text

By Rushor, closes #12258
DB/Creature: Technician Zhanaa

By Rushor, closes #12527
Misc: Use Travis CI
Misc/Travis: Use clang instead of gcc
Misc/Travis: Remove outdated dependencies and add IRC notifications
Scripts/EasternKingdoms: Burn with fire (hihi)
Misc/Travis: Add Coverity Scan addon
Misc/Travis: Enable Travis in the coverity_scan branch & add coverity badge to readme
Misc/Travis: Add a notification email to Covery addon
Misc/Travis: Fix Coverity addon and compile in no-pch mode
DB/Creature: Make heroic version Exploding Orb trigger like normal mode

Closes #12542
DB/Creature: Remove some incorrect bytes from Coilskar mobs

Closes #6891
Core/SA: Fix some issues as analyzed by coverity and iron code style out a bit.
DB/Quest: Rezlak quests are not available for Alliance

Closes #10390
Ref:
http://www.wowhead.com/quest=834#comments:id=52704
http://www.wowhead.com/quest=835#comments:id=52705
Misc/Travis: Remove Coverity addon

It was a good idea but it doesn't work in pratice.
Merge pull request #12586 from Ascathor/master

Core/SA: Fix some issues as analyzed by coverity and iron code style out...
DB/Creature: Remove 2 crazy arcane resistance from 2 mobs

Closes #11237
Someone on UDB must had used resistance6 for error to fill PetSpellDataId.
Core/NPCs: In a formation, properly set walking/running mode

Closes #10539

Signed-off-by: DDuarte <dnpd.dd@gmail.com>