changed the menu to show a "beenden" entry
- the app closes if you click on the option
edited URL
implemented a register dialog
Merge branch 'master' of https://github.com/Berserker88/duelp

Conflicts:
	app/gen/com/google/android/gms/R.java
	app/src/de/jasiflak/duelp/Duelp.java