Tasks returned are sort by dates
Added suggest and accept command
Added duration param enum
Wrap search task to be search only with dates for suggest command
Added suggest and accept command
Attach suggest and accept to logic api
Undo an accept command
Remove debug message
Merge branch 'master' of github.com:cs2103aug2014-w13-4j/main into xy-suggest

Conflicts:
	src/storage/Storage.java
Merge remote-tracking branch 'origin/xy-suggest'