Removing unneeded conditional in set_icons_visible and updating the mouse leave signal to connect to .set_active_icons_visible
Code shuffle + adding test_set_icons_visible.
Adding a test for the rating widget eventFilter.
Adding tets for IconLabel.
hiding set_icons_visible and set_active_icons_visible,  currently it makes sense that the only interface exposedd should be the properties and set_icons_active.
Merge branch 'develop'
Adding comments for TestIconLabel tests.
Merge branch 'develop'