Video mode : Add SDL_WINDOW_ALWAYS_ON_TOP flag

merge

Resources & french locale update

- Better GridView (with animations)

- Added Custom Views in Themes -> Enables creation of multiple view
- Full Themable Menus
- Support for Recalbox themes
- Merge view "detailed" and "video" -> video is not longer needed to display a video, a video element can be created in detailed view.
- Video / Theming -> Support video elements as extras
- Images : Don't load oversized image in VRAM -> max size is set by the container.

[ImageComponent]

Update README.md

bump version to 2.4.1

bump version to 2.2.0