Beta Release 4 - NovaMC 1.99.3-RC4

- Fixed bug: visualization thumbnail didn't resize properly
- Fixed bug: DVD and Video didn't scale correctly
- Fixed bug: Searching in artists or albums yielded weird results
- Fixed bug: Scrolling through files quickly while fetching external data crashed the program
- Fixed bug: Coming back from full screen on main page left nothing selected
- Fixed bug: OSD wasn't located correctly
- Fixed bug: Visualization disappeared when loading plugins