CI/Travis: Do not use Jemalloc

It generates a lot of warnings and it is not useful to test build
added boost environment
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 branch 'master' of https://github.com/TrinityCore/TrinityCore
Merge branch 'master' of https://github.com/D3men/TrinityCore