Fix non-pdf build
Merge cleanups
fix: crash when opening folder containing videos (av_register_all)
ACTUAL fix for the previous bug...
AsyncImageLoader class first draft with improved thumbnails.
Thumbnails are only loaded when sliding to target position.
Refactoring the Movie thumbnail creation
Folder thumbnail generation and restricions on image size for thumbnails.
Corrected the dynamic loading of images and other visual improvements
Moved image creation to a seprate class
respect screen AspectRatio
minor improvements
Fix rebase master
Fix rebase master v2
Refactoring the StateXMLFilePreview