Loot Handler fix, last revision

- Fixing bugs on loot handler for groups looting modes.
- Send now message to the client whenever he must not be able to pick-up the loot.
- When assigned to a player, an item in master loot mode can't be stolen anymore.
- When a roll is won by a player for a given object, nobody else can get the loot anymore.
- Fixing a core crash bug with Roll for Rare Vein mechanism.
Merge pull request #243 from Warkdev/Rel20

[Core] Loot Handler fix, last revision
Merge pull request #242 from Rochet2/Rel20

[Eluna] Implement GetRow core side
fix various creature despawn problems
Fixing Group Loot bugs

- When people are in group, quest items were not pickable because of missing break.
- When people are in group, not in master loot mode, the creatures which have been looted once may not be accessible to other like it should have been.

Bot of them are now fixed.
Merge pull request #245 from Warkdev/Rel20

When people are in group, quest items were not packable because of missing break.
When people are in group, not in master loot mode, the creatures which have been looted once may not be accessible to other like it should have been.
Merge pull request #244 from Evildead666/Rel20

fix various creature despawn problems:
- creatures not despawning after being skinned
- Unlooted creatures have the same despawn time as looted ones
- Rate.Corpse.Decay.Looted have no effect at all
[Core] Corrected Cast for trainer levels. Thanks to Rochet for pointing
Updated submodules for windows cmake work
Initial cmake for windows work
[CMake] Fixed generating windows build
Quick warning fix
Moved Eluna and SD2 to Modules folder. WIP
[Build] Start of acelite integration
[Build] acelite integration
Fixed correct install source for Extensions

TODO: Move this to Eluna submodule
[Build] Fixed some more paths
[Build] Fixed some more paths
[Build] Fixed up some more
[Build] Fixed up some more