Merge pull request #719 from Catrobat/RefactorUITests

Refactor ui tests
Added asserts to clarify failure of unstable test:
testProjectDetailsLastAccess
trying to fix testProjectDetailsLastAccess

sometimes standard project is not created!
this test needs 3 projects with different timestamps,
so standardproject is created if necessary!
Merge pull request #718 from Catrobat/fixTestProjectDetailsLastAccess

Fix testProjectDetailsLastAccess
Refactor UploadDialogTest.testUploadingProjectDescriptionDefaultValue