1. Use qrc for test data so that it can be found on all platforms.
2. Skip a test which does not work on platforms where show() implies
showMaximized(), as it depends on the window size being 150x150.
3. Skip test for hover event which depends on having a valid
mouse cursor position.
4. Skip a couple of tests that fail on some Android devices.
It's not worth spending a lot of time investigating this at the
moment.
Change-Id: Icb2b7f1d82981546a2154a76535b95606d7f40da
Reviewed-by: BogDan Vatra <bogdan@kdab.com>
