Rerip move stats.

Notes:

- I left all the flags surskitty added alone (powder, bite, pulse,
  ballistics, and mental) because they don't seem to be in with the
  other move flags.  The only new flags are the Sky Battle one that I
  added, and a mystery one, which I didn't add —
  http://pastebin.com/K27Vk95J

- move_meta_* is a mess and I don't like it but X/Y seem to have all the
  same move meta as B/W did so I updated it for the time being

- I didn't update effect_id because I'd have to sort out all the new
  effects that I added manually and that sounds like a bigger endeavour

pokedex/data/csv/move_flags.csv

@@ -18,3 +18,4 @@ id,identifier
 17,pulse
 18,ballistics
 19,mental
+20,non-sky-battle