new default project, fixes #364

The new default project is now a simplified version of "Whack a Mole"

Jenkins Testruns:
[custom branch](http://catrobatgw.ist.tugraz.at:8080/job/Catroid-custom-branch-test/1206/)

[jUnit 1 - testCreateStandardProject](http://catrobatgw.ist.tugraz.at:8080/job/Catroid-single-jUnit-test/90/)
[jUnit 2 - testLn](http://catrobatgw.ist.tugraz.at:8080/job/Catroid-single-jUnit-test/91/)
[UI 1 - testTapOnFullTransparentAreaOfForegroundSprite](http://catrobatgw.ist.tugraz.at:8080/job/Catroid-single-UI-test/842/)
[UI 2 - testUploadingProjectDescriptionDefaultValue](http://catrobatgw.ist.tugraz.at:8080/job/Catroid-single-UI-test/839/)
[UI 3 - ProjectUpAndDownloadTest](http://catrobatgw.ist.tugraz.at:8080/job/Catroid-single-UI-test/841/)