Remove some lint warnings

* Replace '...' with '…' where necessary
* Up maxSdk in Testprojects
* Ignore one more category of lint issues in ABS
* Remove debuggable flag from Manifests
* Reorder tags in Manifests according to lint
* Give some strings a more appropriate name
* Delete unused strings
* Set strings in strings-global.xml to translatable=false
Merge branch 'ALittleLintCleanup' of github.com:Catrobat/Catroid into ALittleLintCleanup