fix ProjectActivityTest

* add waitForFragment - missing call could lead to failing testcases
from time to time, if fragment is not loaded, but actions on Activity
are performed
* adapt testOverFlowMenuDelete and testOverFlowMenuRename - goBack does
not trigger the action event any more; a click on ACCEPT_IMAGE is needed
fix ScriptFragmentTest

use UiTestUtils method to get correct Listview (Index 1 with new design)