[mr3015] some basic reorganize in locking system. testing (to be continued). main idea - remove most main locks, unneeded after rework gridsystem, implement AuraPair and other.
[mr3016] make valgrind more happy by check results (nothing principial).
[mr3017] make valgrind more happy by check results part 2
[mr3018] some small corrects to groups deleting, close #1414