[mr3004] correct lock in LoadObjectToGrid()
[mr3005] make group/player removing from PersistentState asynchronous, over Mgr. also correct naming (UnbindList -> BindList). close #1406 next time.
[mr3006] next stage for chhange containers to UNORDERED analogs. must give some speedup.
Merge branch 'master' into testing
Revert "remove obsolete code and locks from mtmap/vmss system. testing."

This reverts commit b8b53b80766c259a7a6cecfbbc2051fcf194d8a1.
remove obsolete code and locks from mtmap/vmss system v0.2.
- re-add freeze VMSS operation on current code base (check config settings for avoid false-freeze!).
testing.