Some tests need to wait for view to be updated before proceeding. This ensures
a polish is received before proceeding
- before checking through child items after initial load
- after changing content y
unless some other QTRY_* is already doing the job.
Also fixed some tests that randomly failed for other reasons.
Task-number: QTBUG-22872 QTBUG-23605
Change-Id: I2d41bf09fae09b90fd3aadbd5349e991c3339761
Reviewed-by: Martin Jones <martin.jones@nokia.com>