Version 0.9.1
Added support for importing elements in the repository with states renderers
Application exits cleanly
Added date component
Scenes are created with a date
Refactor so all scenes creations are done through templates
Updated sort widget with date sort
Merge pull request #757 from anserran/sceneorder

Scenes can now be ordered by creation date
Merge pull request #761 from RotaruDan/newViewport

LibraryMetadata is saved to disk and loaded from it the next time needed.
Some cleaning
Merge pull request #762 from jtorrente/repo-import-states

Added support for importing elements in the repository with states renderers
GalleryItem refactoring. Adds InfoGalleryItem a widget that displays info about a repository or a library.
ItemInfo refactoring, now it's used for repositories and libraries.
Adds GetLibraryThumbnail action and assets for LibraryItems.