Added exit button to file menu
Added javadoc to MenuBuilder
Proof reading of very nice comments
Renamed methods in MenuBuilder; added "exit" string to english translation
Renamed separator to addSeparator
Merge pull request #99 from anserran/exit-menu-button

Added Exit button to file menu (and some javadoc for MenuBuilder)
This solves issue #101 (forcing a full persistent removal of all json files before the model gets saved to disk)
Added needed i18n strings for element, scene and project widgets.
Created ElementButton and SceneButton, small javadoc improvement for ProjectButton.
Since there is no title/description for the Scenes and SceneElements some alternative message will be displayed instead, for those widgets.
More javadoc and improvements for DescriptionCard and GalleryEntity widgets.
Added shorting functionality to all galleries.
The Newest/Oldest shorting options doesn't do anything because there are no modification dates for the gallery entities at the moment.
A little refactoring. This creates a basic test class (EditorTest) that builds a mock platform and controller. Most editor tests would like to extend this class.
Changing the way project json files are removed to ensure all json files are actually removed, even if they are not referenced in project assets any longer
Creating a test for the EditorIO.saveAll() method
Changing SaveGameTest so it also checks that EditorIO.saveAll does not remove files with extension different of .json (e.g. images)
Fixing code style with maven
Updated to download sdk platform 10
Proper logging for exceptions
Merge pull request #1 from anserran/fixes103

Proper logging for exceptions
Merge pull request #104 from RotaruDan/ProjectGalleryFunctionality

Shorting gallery functionality and more...