When clicking the Wallpaper Selector button in the bar, it did not
respect the users position choice. For example if set to bottom right,
it would still follow bar position.
Large commit that totally refactor of the way we handle the bar and
panels.
Testing should focus on Panels, Bar, Keyboard Focus, IPC calls.
Changes brief:
- One NFullScreenWindow per screen which handle it's bar and dedicated
panels.
- Added shadows
- Reintroduced dimming
- New panels animations
- Proper Z ordering
- Panels on overlay laywer is not reimplemented, if we do it then the
bar will be on the Overlay too
- Panel dragging was not reimplemented, to be discussed before
reimplementing
- Still a WIP, need to work more on shadows and polishing + debugging.