Remove resumeepisodes, use existing data for resumevideos

Removes the resumeepisodes (including retrieving the data), and instead
uses the recommended episode data to build the resumevideos list.

Also changed the resumevideos to sort by lastplayed, so that the most
recently stopped video appears first.

No guarantee it's any more likely to be accepted to be merged into BigNoid's master, but he may be more willing when extra data isn't being requested for something he considers superfluous. (And easy enough to add back in resumeepisodes if that's something you feel strongly about, again using the recommendedepisodes data)

Just an idea (and I personally like what I think of as my In Progress Videos widget from your changes) :)