so now sizing and count and spacing of items change, header
sizes/style change and more when switching to/from fullscreen mode.
fullscreen == "i want to be a media cener now on a big screen tv" vs
"i'm a video collection browser in a window on your desktop". far
nicer now. i think this is getting close to another release. maybe
after 1.18
this adds a video browser that indexes everything in ~/Videos
flattening subdirs into categories. It also will handle music and
fetch album art. browser can be mouse or key controlled. makes rage
almost media-centerey. not intended as a replacement tho, but just
that it's handy to throw in.