try integration testing
fix integration test and add empty task test case
add fixtures and complete task test
remove showstage in integration test
add sample fixtures
ensure hashtable is ready for integration test
add storage integration test and delete test
Merge remote-tracking branch 'origin/sun-testing' into sun-v0.4

Conflicts:
	src/application/Task.java
tidy up test files
UITaskListItem
resolved conflict with UITaskListItem.java
changes to UITaskListview
resolved the listview not being drawn properly.
priority 4 now shows yellow instead of green
implement command pattern for filters
add override annotations
depreciate the current listview API and introduce two new API for the controller
Merge branch 'tys-ui' of github.com:cs2103aug2014-w14-2j/main into tys-ui
fixed the issue with cursor stucked when using cmdhistory
now double space will shift the cursor out of the [] boxes