[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).