change display style to make current list stay
add display by overdue
refacted initial display
Merge branch 'master' of github.com:cs2103aug2014-t17-1j/main
Fixed bug for optional command handling
changed -task to -title
Merge pull request #121 from cs2103aug2014-t17-1j/Jack_UI

Change Selection for specific table row
add highlight, not finished
Merge branch 'master' of github.com:cs2103aug2014-t17-1j/main
Highlight after adding new tasks