Added new strings to I18N for Project screen.
Added BottomProjectMenuButton that extends MenuButton.
Added buttons/widgets/layout to ProjectScreen.
Merge branch 'master' of https://github.com/e-ucm/ead into ProjectScreen
Now font changes scale for MenuButtons if needed.
Added IconButton.
Added new screens: Picture, Video, Gallery, ElementGallery and SceneGallery.
Added ChangeView actions between ProjectScreen's buttons and other screens.
Added Navigation widget.
Added facade interface DecivePictureControl and it's implementation in Android, on Desktop it's a dummy.
CHanged clear color to translucent. It's necessary if we want to see camera's preview.
Added headers to some files.
Added necessary features/permissions in Editor's AndroidManifest.xml.
Automatic formatting.
Fixed  bug that wouldn't open a project in Android.
Fixed a bug with the clear color while taking a picture.
Fixed a bug while taking a picture.
new strings
Added gallery without functionality
Added ToolbarButton widget. Used in the Navigation widget.