(Un/Re) deployment improvements

- the old goals deploy, undeploy and redeploy are now only to be used with Android Maven projects with apk packaging
- all other projects are skipped, this allows you to e.g. run mvn install android:deploy in a multi module build, it will deploy all apks within the reactor and just skip other projects, same with redeploy and undeploy
- three new goals deploy-apk, undeploy-apk and redeploy-apk that can be used as standalone goals with command line execution or in non-android projects with the required parameters
- this needed a fall back for the api level android sdk setup, which is set to the latest version (currently 19)