improve ping behavior and clockskew in octree servers by introducing datagramprocessing thread
fix header
fix crash on change domains while entities are animating or moving
fix various crashes in entites
Merge pull request #3367 from ZappoMan/improveClockSkew

improve ping behavior and clockskew in octree servers
Merge pull request #3372 from ZappoMan/entitiesCrashes

Fixes the several entity crashes