First Implementation of SongType support in Playlists (needs libechonest from https://github.com/Horrendus/libechonest)
Added correct Widget Update after Startup & Summary Text for Song Type Support
* Support getting biographies from Last.fm.
* Echonest supporting new API call for biographies.
* Added squareCenterPixmap( QPixmap ) to TomahawkUtils.
* Use new biography API call in Artist class.
* WIP: New artist page.
* Compile fix for older liblastfms.
* Fetch album covers via Last.fm's Album.getInfo API call. Use ExtraLarge instead of Mega per default.
* Fixed PlaylistInterface ignoring offline results.
* Generate square album covers, too.
* Call parent's base-method after changing the current index.
* Emit a signal when PlaylistInterface's currentIndex has changed.
* GridView now allows (like Track- & TreeView) to have its PlaylistInterface overwritten.
* FlexibleView now overwrites GridView's PlaylistInterface.
* Update GridItemDelegate's buttons when current index has changed.
* Prepared QueryLabel for queries without an album name.
* Removed obsolete pseudo-PlaylistInterfaces.
* Added MetaPlaylistInterface, an interface that manages child interfaces.
* Added missing includes.