BRANCH 4.1:
   FileAppendCheckin and FileGroupAppendCheckin runs the trigger with a different prefix for the event
   set the is_latest one more time post snapshot creation
   fixed the bug in inplace mode during Checkin handle_system_commands, it should return after the for loop
Merge branch '4.1' of https://github.com/Southpaw-TACTIC/TACTIC into 4.1