Merge pull request #70 from cs2103aug2014-t10-4j/logic

update for search sort function
Create package for res/help.txt so that help.txt can be displayed when exported as JAR file.
Shift help.txt to another package, else wont work on executable jar
one word commands, restore and delete all updated
Merge pull request #71 from cs2103aug2014-t10-4j/LatestParser

one word commands, restore and delete all updated
Put one word statements in controller under Case again. 'sort' and 'show details' is not included yet
Add another version of helpV2.txt which is more user-friendly. Change result textfield to textarea in case of multiple lines feedback
Add more cases for command in Controller. Improve feedback of some functions like delete
updated commands
updated commands like show details and view details
Change date format and some constants
edited date format from ddMMyyyy to dd/MM/yyyy to solve bug
Changed string constants of Controller and Logic
Merge branch 'UI'

Conflicts:
	src/Logic.java
add more cases in controller
Merge branch 'master' into logic

Conflicts:
	src/Controller.java
	src/Logic.java
	src/Task.java