screen rotation now only possible for tablets, remove bottom action bar on tablets
Merge branch 'master' of github.com:jritter/VoterApp

Conflicts:
	VoterApp/src/ch/bfh/evoting/voterapp/AdminWaitForVotesActivity.java
	VoterApp/src/ch/bfh/evoting/voterapp/DisplayResultActivity.java
	VoterApp/src/ch/bfh/evoting/voterapp/ElectorateActivity.java
	VoterApp/src/ch/bfh/evoting/voterapp/NetworkInformationActivity.java
	VoterApp/src/ch/bfh/evoting/voterapp/ReviewPollActivity.java