Added a metric shit-tonne of wallpapers.

From:
Angel Beats!
AnoHana
Durarara!!
Hunter x Hunter
Histugi no Chaika
Kokoro Connect
Kyoukai no Kanata
Mirai Nikki
Nisekoi
No Game No Life
Non Non Biyori
Toradora!

All 1920x1080 or 3840x1080, and good quality.