Release engineering (cleanup, lightened mvn clean install)

This PR clean up the maven project configuration and reduces the build time for the project, in particular, removes the heavy building part of the android projects from the default profile.

Now to properly build the android artifacts it is needed to use the **android-build** profile, that is: ```maven -Pandroid-build clean install```

This may affect @RotaruDan and @gorco workflow.