Some fixes for https://github.com/SecUpwN/Android-IMSI-Catcher-Detector/issues/168

- Default MCC list now shows record count
- Changed disclaimer buttons to "I Agree" and "I Disagree", so that we no longer need to explain what Ok and Cancel do.
- Service now does not start up until the disclaimer is accepted. Also prevented crash when disagreeing.
- Removed proguard artifacts from version control - these don't belong here.