Core/Battlegrounds: Fixed build, now to see if we crash in game.

RE RUN CMAKE!!!!
SQL: add missing tables for battleground/arena rated system
Core/Network/Guid: cleanup guild code from outdated stuff before work on guild updates
Conf: delete deprecated shit
Network: update some guild Opcodes
Few minor updates the README.md

Signed-off-by: SkyFire <admin@projectskyfire.org>
Merge branch 'master' of gitlab.com:skyfire/skyfire_6xx