Fixed Bug. Timed Task is not displayed when searching for task by due date
added logger.
Merge pull request #132 from cs2103aug2014-t17-1j/Jack_UI

Jack ui
renamed Package
renamed testcases
Change overdue task color background highlighting
Rewrote hotkey listeners using jkeymaster. Changed overdue foreground and background color.
added comments
change the border of command box
Fix bug for feedback msg seeting previous msg
deleted unused code for CommandBoxPanel Class
deleted unnecessary code in until ContentTablePanel
Deleted all unnecessary code from UI classes