[CORE-WEBUI] Image was to big in web ui. Refactoring all downloading system to download only once images and get them it correct size (not too big).
[WEBUI] Adding links to download full size arts and pre-download first backdrops in MINI size.
[MPLAYER] Create plugin based on MPlayer to read video files.
[MPLAYER] Create player module API, implemented by MPlayer and add controls on UI. Controls are dispatched by Guava Event Bus.