notedeck : Add note wide mode for reposts
This adds a 'wide' note design for note previews. This is a mode
where the note contents does not have padding at the start. This makes
notes previews a bit nicer.
Screenshot: 
Signed-off-by: William Casarin
https://github.com/damus-io/notedeck/commit/af8d7d222c05d4b0be296c3b62958d0133d988fb