Rescan conflicts when tags change

[anonymous]

Make a change to tags across several objects which creates a common conflict. Re-sync the data to get lots of conflict reports. Mass-tag those objects to use the up-to-date value.

Expected behaviour: as the conflicts are resolved, they disappear from the list.

Actual behaviour as of r3966: conflicts remain listed, are dismissed by utterly pointless "Resolve" -> "Apply resolution".

Re-check conflicts when a change is made to see if they still conflict - or provide an option to initiate a rescan of the conflict list.