Created and started SemesterActivity
Merge remote-tracking branch 'origin/master'

Conflicts:
	bin/classes/com/example/computingtimetableplanner/Stream.class
	bin/classes/com/example/computingtimetableplanner/StreamActivity.class
	bin/classes/com/example/computingtimetableplanner/Unit.class
	bin/classes/com/example/computingtimetableplanner/UnitActivity.class
Merge