[mr3019] move some WoldLocation-related changes from tesing branch (not must have any effect)
[mr3020] add some forget WorldObject-related code from testing branch (not must have any effect)
[mr3021] correct some position display command messages, related to transport.
[mr3022] add SkipUpdate() method to possibility skip one update cycle (possible double-update for objects, moved from one map to another map, like players and current realization of MOTransport. by result of valgrind execution. also move Object() initialization to constructor (style fix).
[mr3023] partially rewrite player->group linkage, use ObjectGuid's instead of references. must give some safety (untested!). testing.
[mr3024] multithread safety in WorldTimer (by result of valgrind check). testing.
[mr3025] fix old typo (possible related to some transport collisions).
[mr3026] move TransportKit updating finally to GameObject class (Transport-related but independent). testing. - also correct anchorage (smooth moving).
[mr3027] fix transport path for keyframes without correct map id.
[mr3028] revert part of 3019 (elevators currently not Transport objects, but sends guid like this :) )
[mr3029] make DynamicTree locked (need for real multithread usage). by valgrind check results.
[mr3030] continue removing unneded locks, rework locksystem part 7 v0.2 (requires DynTree locks). testing.
[mr3031] fix impossible problem from 3020 (GameObject not must has TransportKit... but has it really... craizy :). thx to Undergarun.
[mr3032] drop usage LOCKED VehicleKitPtr (seems unneeded in current code), rework locksystem part 4. need separate test.
[mr3033] drop usage LOCKED UnitActionPtr (seems unneeded in current code), rework locksystem part 5. need separate test.
[mr3034] Implement atomic lock method in common code (FFU). thx Boxa for code.
[mr3035] fix broken "manual" invite after 3023, thx to mns.
Revert "[mr3035] fix broken "manual" invite after 3023, thx to mns."

This reverts commit 948c7bf915aee07988c4f7c82907b3217ca89738.
[mr3036] try prevent group looting without group (cheat?). related to #1415.
[mr3037] Always cleanup GroupGuid/OriginalGroupGuid while set new group or remove from old group. remove static RemoveFromGroup() method - source of problems. possible fix bug-using problems, identified after 3023, also some speedup. testing.