Created a static Logger instance in Main
Merge pull request #102 from cs2103aug2014-w13-1c/jin/gui

Created a static Logger instance in Main
Refactored logging to make use of a singleton service class called LoggingService.
Merge pull request #103 from cs2103aug2014-w13-1c/jin/gui

Refactored logging to make use of a singleton service class called LoggingService.
removed unused imports in RootViewController and deleted unused InputField.fxml
started logging inputfield changed inputs and instant search queries using LoggingService