fixed issue#224

Concerning #224 Fix Uploading of Complex Unicode Projects

Jenkins Testrun:
http://catrobatgw.ist.tugraz.at:8080/job/Catroid-custom-branch-test/762/

5 iterations of the ProjectUpAndDownloadTest#testUpAndDownloadJapaneseUnicodeProject:
http://catrobatgw.ist.tugraz.at:8080/job/Catroid-single-UI-test/511/