Added stub help helper module.
Added stub help helper module.

--HG--
extra : rebase_source : ce79b667b6b912658bf80b02b3834084ae0526e4

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