Schema and Engine component
Processor
Initialization
REVIEW NOT NEEDED (bindings)
CoolDemo updated. TextButton that shows/hides the bee has been replaced by an image button
Minor fix needed after rebase
Merge pull request #405 from jtorrente/ImageButton_component

Image button component
A first approach to a repository implementation.
ElementButton improvements.
Download, unzip and display the repository thumbnails.
Fixed Android skin loading path.
Added I18N strings.
Added selectable flag for BaseGallery.
Improved RepositoryGallery.