All versions of File Widget - home screen file browser and viewer

- New Recent tab showing files and folders previously displayed in a widget - New single page PDF view - Added thumbnails for PDF files - Added option to change the size of items in gallery view - Use compact list items setting is now per widget instead of global to all widgets - PDFs are now viewable on Android 4.1, 4.2, 4.3 and 4.4 - Various bug fixes and improvements