Fix controller name for history link generation.
Fix controller name for history link generation.

Apparently rails now actually care about case and pass it as is instead of
implicitly converting it to lower case.

--HG--
extra : rebase_source : 88e1a2076440517b4a02fa19b6e9f407c8568402

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