Merge pull request #262 from cs2103aug2014-w13-1c/ryan/controller

Renamed startDateUpdated and endDateUpdated into startDateKeyword and endDateKeyword
More tests for ActionControllerUnits.
Merge branch 'staging' of https://github.com/cs2103aug2014-w13-1c/main into staging
Merge pull request #263 from cs2103aug2014-w13-1c/ryan/controller

Finished commenting for my part! Yay!
Solve merge conflict