Merge branch 'Peaders_Branch'
Changes to UI

Added headings, back button, cleaned up subject page
Merge branch 'master' into Peaders_Branch

Conflicts:
	bin/TimeTableapp.apk
	bin/classes.dex
	bin/classes/com/example/timetableapp/SessionDetailsActivity.class
	bin/resources.ap_
	res/layout/activity_session_details.xml
	src/com/example/timetableapp/SessionDetailsActivity.java