Fix relationship type selection (r:RELATIONSHIP doesn't seem to be valid Cypher)
Make sure we show the layer name in the layer control and not the ukey which is meaningless for the user
TODO: fix couple more issues (I, @nikita03565 , will handle this):
app crashes when there are no nodes found
app crashes when db with name saved in local storage no longer exists
Small fixes after manual tests:
Prepare for 0.6.0 release: