Added tentative view (table for tentative tasks).
Merge branch 'master' of https://github.com/cs2103aug2014-t11-1j/main into krystal

Conflicts:
	src/gui/view/TentativeView.fxml
Tentative parser skeleton
Added star for isUrgent, made task strikethrough if done. Removed tick
Now you can interact with all views when switching. Prepping for tentativeView.
Updated star picture
Skeleton for GUI tentative view. Made changes to TentativeTask for building of tree.
added support for 20dec format
Added HelperListener so HelperView can update correctly.
bugfix
Fixed issue of helperview reverting back to todayview instead of tableview after adding task
bugfix

bugfix
bugfix

bugfix
bug

bug
BUGFIX

BUGFIX
bugfix

bugfix
Added skeleton for dash time format

6-8pm
Removed functionality of partially completed code
Added support for dash time format

8 - 9pm works now
Parser bug fixing. will fix the rest tmr

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