Added base Battleground support for Eluna

Moved eluna files into its own filter

Updated Eluna version
Updated VC 100/110 projects
New mineral spawn system
Merge pull request #234 from Rochet2/Rel20

Eluna: Fix SD2 incompatibility
Merge branch 'Rel20' of https://github.com/mangoszero/server into Rel20
Pets are stopping now in correct position
Pets are now cancel attack on stay
Merge pull request #235 from Evildead666/Rel20

Includes New Mineral spawn system, db work still required.
Autopooling for mineral nodes for each zone, disabled by default until db work is done.
Fix for pets do not react correctly to stay command.
Fix for pets do not cancel attack on stay command.
Merge branch 'Rel20' of https://github.com/mangoszero/server into Rel20
Fix merge
Merge pull request #232 from Foereaper/Rel20

Added base for BG methods, filter for Lua engine files
[Deps] Fix Linux build. Thanks zackbcom
Documenting and Optimizing DBCStores related functions.

- Adding documentation of DBCStructure.h.
- Removal of unused variable of structure (avoid loading them).
- Removal of unused structures.
Merge pull request #236 from Warkdev/Rel20

Documenting and Optimizing DBCStores related functions.
Update submodule
Merge pull request #237 from Foereaper/Rel20

Eluna Update submodule
Temporarily fix crash on shutdown
Merge branch 'Rel20' of https://github.com/mangoszero/server into Rel20