Added generic trainer guy/girl sprites, used for size comparison.

Added Pokémon cries.

Added Diamond/Pearl Pokemon sprites.

Fixed some Platinum sprite naming.

201-f.png had become female/201.png.

Deoxys forms were named after games, rather than stats.

Added habitat sprites.  Renamed flavor to flavor_text.

pokemon_flavor_text.flavor -> pokemon_flavor_text.flavor_text

Moved images/ to media/.

Since this directory will shortly contain cries, which are mp3s,
'images' didn't really seem fitting.