Deeper integration with GNOME

[mathieu jourdan gresille org]

Hi there! I just subscribed to this list, coming from the GNOME wiki. 
As time passes, GNOME looks more and more beautiful and easy to use, but 
too few applications really fit the new design guidelines, which are 
still moving anyway.

So, what's the matter? Well, Déjà Dup is the most successful attempt I 
seen to make a clever user interface for backuping personnal data. It 
integrates well with GNOME, but you know that. Some things have already 
be pointed out in usability review, and I would like to help making this 
application even more comfortable to use, especially on GNOME desktops.

If you search for Déjà Dup on Google Images[0], you'll see that most 
screenshots represent the "Two-buttons welcome screen", while user will 
actually see this screen once, and never again. I think one of the 
reasons of this is that the welcome screen is an important piece in 
making Déjà-Dup feel so easy. So, you'll find below a proposal to solve 
this paradox by "rehabilitating" this screen, making it the central 
piece of Déjà-Dup UI, without compromising simplicity.

See the GNOME wiki[1] to find some wireframes. I would be glad to read 
your thoughts on these.

Best regards,
Mathieu

[0]: https://www.google.fr/search?q=déjà-dup
[1]: https://wiki.gnome.org/Design/Playground/Backups#Proposal