Shotwell integration with mediagoblin API

[Christopher Allan Webber]

This is obviously somewhat preliminary, as we don't have an API
quite yet as I'm writing this, but...

We certainly want to integrate with all sorts of devices, but
Shotwell would be a fantastic starting point as they're FaiF, come
in near every gnome-oriented distro preinstalled, have similar
goals, and have expressed interest in bundling a mediagoblin
plugin.

`http://redmine.yorba.org/projects/shotwell/wiki/ShotwellArchWritingPlugins <http://redmine.yorba.org/projects/shotwell/wiki/ShotwellArchWritingPlugins>`_

[Will Kahn-Greene]

The original url for this bug was ​http://bugs.foocorp.net/issues/717 .

[Christopher Allan Webber]

I am very waffley about whether this should be on our bug tracker. Cc'ing joar in case he has opinions. We do have the API now. But we also closed out an automgtic related bug because it wasn't directly related to MediaGoblin.

I'm going to leave it open but if nobody's done anything with this in the next couple of months, it should be closed.

[Christopher Allan Webber]

Not sure why I marked it fixed with that statement above. :)

[joar]

Since Elrond's piwigo plugin we can post from shotwell to mediagoblin using this patch to actually upload the submitted files: ​https://gist.github.com/joar/5601717

[Christopher Allan Webber]

Joar, I'm just looking at this now unfortunately... anyway, it looks like this actually ought to be using the new submit tools if we're going to make use of it in mediagoblin.submit.lib:submit_media(). We could avoid code duplication if we do this.

I'm going to pass this back to you, though I'm also a bit lost since I haven't used the piwigo plugin. As long as someone who *does* use the Piwigo plugin tests and verifies that it works, and the code looks clean, I'd be willing to merge this to master.