Fixed some bugs

fixed bugs
added animations for tentative view

weeeeeeeee
Fixed a couple of bugs in parser
Combined Clear, ClearDone and ClearUrgent into Clear.
Commands are now "clear", "clear done" and "clear urgent" respectively.
Merge remote-tracking branch 'origin/master'
bugfix
Basic version of intuitive delete
bugfix
Merge branch 'master' of https://github.com/cs2103aug2014-t11-1j/main
changed regex to solve some bugs
BUGS FIXIENF
Parser now takes 2 instances of time
1st instance is startTime
2nd instance is endTime
BUGFIX
Merge remote-tracking branch 'origin/krystal'

Conflicts:
	src/logic/Delete.java
Fixed concurrent modification exception with clear done and clear urgent commands.
Removed unused commands
Added Display command to search for Done and Urgent tasks.
Added clearing of normal, non urgent tasks.