DB optimizations: added key, added connection auto check in pool
!!! nodes table: add (path, container_id) key - speed up 10X
Undelete container on recreation
Changed python processor port
Connection testonborrow breaks everything
Removed double quotes in CREATE TABLE statement causing  square brackets to appear as part of column names.
Merge branch 'master' into feature/keystone
Removed double quotes in CREATE TABLE statement causing square brackets to appear as part of column names.