fix crash
Merge branch 'master' of https://github.com/itworx/StudentCallout-Android

Conflicts:
	bin/StudentCallout.apk
	bin/classes.dex
	bin/classes/com/itworx/tk/studentcallout/MainActivity.class
	bin/classes/com/itworx/tk/studentcallout/StudentsAdapter.class
	bin/classes/com/itworx/tk/studentcallout/StudentsPresenter.class
	bin/jarlist.cache
	bin/resources.ap_