** SuperTabNavigator frequently doesn't respond to tab clicks
* initialiseEditors is quite slow (typically 150ms)
* Tag panel jumps up and down when number spinner is used on bike parking
-* New relation panel jumps up and down, but I haven't seen it on editing existing relations
* Changing relation ref doesn't update the main tagviewer until the entity is reselected
* Changing type of relation doesn't update the main tagviewer until the entity is reselected
* Adding a relation via the advanced panel doesn't update the simple panel