Updated Italian translation
added css classes for cover and title in artistalbum widget in ui.
Merge pull request #127 from sumansai14/master

added css classes for cover and title in artistalbum widget in ui.
Updated Czech translation
add to playlist button should be insensitive when there is no selection.
Updated Brazilian Portuguese translation
Merge pull request #131 from sumansai14/master

add to playlist button should be insensitive when there is no selection.
Merged github changes

 * added css classes for cover and title in artistalbum widget in ui.
https://github.com/gnome-prototypes-team/gnome-music/issues/127

 * add to playlist button should be insensitive when there is no selection.
 https://github.com/gnome-prototypes-team/gnome-music/issues/131
Load default icon using Gtk.IconTheme

We are using an absolute path before, which doesn't take into account the
current theme and icon path.
albumArtCache: Move to new class the loading of album art from uri

Create a new class GetUriRequest which would download the image from the uri.
albumArtCache: Merge lookup and lookup_or_resolve

Merge lookup and lookup_or_resolve into lookup, then move their callbacks to a
new class.
Update callback calls for latest changes in album art loading
Updated Hebrew translation.
Merge pull request #129 from kyoushuu/album-art-cache-rewrite

Album art cache rewrite
Updated Galician translations
albumArtCache: Don't resolve the thumbnail key

Workaround for the random segfault when resolving the thumbnail key.
Populate methods in grilo.py resolves this key too, so this part could be
safely removed.
Revert "When updaiting album art update it for all items"

This reverts commit 2fb580bec64c3c1d3eb90a93db91b85fa3f9338c.

This commit loads the covers in Albums view multiple times. The workaround for
resolve will now fix the bug fixed by this commit.
player: Mark "Unknown Artist" as translatable

Also, changed it from "Unknown artist" to "Unknown Artist" to match other
instances of this in other source files.
Fix top and bottom margin around stack switcher
Merge pull request #134 from gnome-prototypes-team/github/fixes4

Fix top and bottom margin around stack switcher