Fix LT-15558: Display the failure message after import

The previous fix was a bit rushed and neglected to change the way
the message was handled.

Change-Id: Ib5aaa6282d692a93a8b8d83a1779f902d4a8930f
LT-14613: Don't crash when user attempts circular reference

Prevent users from making an entry a complex form of itself or
any of its senses by excluding itself from search results.
Prevent with a dialog when a user attempts to create a "circuitous"
circular reference (involving both Variant and Complex Forms).

Change-Id: If9e7cde42fc7c88a900c33e5a4b51f5eddb23758