Use the newer way of removing an item from a ViewCollectionGroup when removing plumbing connections
Merge branch 'develop-frontend' into feature/issue-560-duplicate-id-when-recreating-deleted-routing-connection
Ensure models are removed from the relational model store when removed from a view collection (fixes the duplication error we are getting when we re-add a removed connection on the routing screen)
Better testing for relational store model unregistering for ViewCollection.p.remove()