DB/NPCs: Set basic immunities to most bosses

Charm, Fear, Root, Sleep, Freeze, Polymorph and Sapped
Thanks to Aokromes for the idea
CI/Travis: Do not use Jemalloc

It generates a lot of warnings and it is not useful to test build
Core/Spell: Correct the hit and miss counters in WriteSpellGoTargets

Fixes a client crash when spells hit (or miss) more than 255 targets (it was capped at 256 in 80b61fa584b019a298e129764cddba9f)
Thanks to @joschiwald for finding the mistake

Closes #12733
Build/CMake: Compile the minimum of dependencies possible

mysql if SERVERS, zlib, g3d and recast if SERVERS or TOOLS
Merge pull request #4 from TrinityCore/master

pull