changed taskTime type to List<Date>
updateDeadlineTask method done
Merge remote-tracking branch 'origin/xjy-UI_temp' into sun-controller

Conflicts:
	src/application/TimedTask.java
taskTime null error checked
Merge remote-tracking branch 'origin/xjy-UI_temp' into sun-controller
taskTime null error checked
Merge remote-tracking branch 'origin/xjy-UI_temp' into sun-controller
fix parser edit extra statement