Changes White River Watch and Embershard Mine to be compatible with SRC.

White River Watch:
Forwarded Dungeons - Revisited's navmesh and made it compatible with SRC. Added some navcut boxes to SRC objects.
Added one extra guard to the new exterior mountain walkway. Added all enemies to the SRC framework (they won't respawn after conquering).

Embershard Mine: 
Forwarded Dungeons - Rivisited's navmesh and made it compatible with SRC. Added some navcut boxes to SRC objects.
Removed some mist, deeper in the mine (after conquering).
Added one extra guard deeper inside the mine. Added all enemies to the SRC framework (they won't respawn after conquering).
Added one extra miner deeper inside the mine. One miner now uses new mining spot.