fix errors in test build introduced by renaming the package in AndroidManifest.xml
instead, we can customise the build task to add a manifestpackage parameter to aapt
this will ONLY rename the package according to android package uniqueness - not any other instances (such as the name of the R resource class, relative class names in the manifest file, etc)
see http://stackoverflow.com/a/11084817 and http://www.piwai.info/renaming-android-manifest-package/ for details

(we still have a hacky mobile-test-setup/revert - but only to rename the title string now)