Renamed move_rsgroup_servers as move_servers_rsgroup
Renamed move_rsgroup_tables as move_tables_rsgroup
Minor changes to help text in rsgroup commands making them all same.
Made LOG from RSGroupAdminServer all talk of 'rsgroup' rather than
'group' to be consistent.
Fix for table.jsp where it would fail to display regions because no
type for the protobuf record specified.
Fix it so that move of an offline server to 'default' rsgroup is like
moving the reference to the server to trash (keeps the 'default' group
consistently 'dynamic' regards its server-list).
Fixed another issue where we were stuck in a loop because regions
were in FAILED_OPEN state because no server to assign too so we'd
never recover (a vagary of the current state of Master assignement
but no less a possibility in real world deploys).
Make it so servers are sorted when we list them; its what operator
would expect.