See issue #16
* Add basic settings view
* Fix play next song when playlist is on
* Add timer styling on webplayer
* Fix wrong albums being linked in songs table
Major code review, cleaning the code and adding a lot of comments. Also
implements a separate store to keep entities with a reference count and
garbage collection. This closes#15.
Known issues at the moment are:
* Webplayer is no longer working, it has to be refactored.
* AlbumPage is to be implemented.
