Use page number ordering for any kind of pool/show.
Use page number ordering for any kind of pool/show.

Fixes issue #148.

--HG--
branch : 3.2.0-release

nanaya/moebooru,nanaya/moebooru,moebooru/moebooru,euank/moebooru-thin,moebooru/moebooru,moebooru/moebooru,euank/moebooru-thin,nanaya/moebooru,euank/moebooru-thin,nanaya/moebooru,euank/moebooru-thin,nanaya/moebooru,euank/moebooru-thin,moebooru/moebooru,moebooru/moebooru