1. Add "Progress" for task
2. Remove DeadlineTask, FloatingTask, TimedTask
TestCode
Merge pull request #10 from Cutton/Da

Da
sync
Look and feel
add new task
Merge remote-tracking branch 'upstream/master' into Da

Conflicts:
	src/controller/MainController.java
	src/userinterface/MainLayout.java
	src/userinterface/MainMenu.java
conflicts
Merge remote-tracking branch 'upstream/Da' into Da
mainlayout
conflicts sovled
Merge pull request #15 from Cutton/Da

Da
Add theme
Sync code
Sync code and solve conflict
sync
Merge pull request #17 from Cutton/Da

Da