Basic assertion of taskData's size
The logger object is not static, because it belongs to a singleton instance.
Removed unused imports in RootViewController
Optimized imports in the fxml files
Merge pull request #106 from cs2103aug2014-w13-1c/jin/gui

Made a minor change to LoggingService, but it doesn't affect current references to it.
Merge remote-tracking branch 'origin/staging' into jolly/gui