(GroupInstances) Use a unique method to check existing names
(GroupInstances) Remove useless references to monitors
(GroupInstances) Whole feature is run from a unique method
(GroupInstances) Add doc, change order of some actions
(GroupInstances) Merge update stuff in the main connections loop
(GroupInstances) If possible, update connections

This is better than always create new connections and delete useless one.
The feature run quickly than before
(graphiti) Allow to cancel variable/argument edition
(GroupInstances) Support Arguments/Parameters in grouped instances
(UngroupNetwork) Remove useless references to monitors
(UngroupNetwork) If possible, update connections

This is more efficient than always create a new connection
(UngroupNetwork) Support arguments/parameters when ungroupping a network
Merge branch 'group_ungroup_parameters_support'