Remove extension regardless of it being valid.
Remove extension regardless of it being valid.

This completely fixes issue #108. If a request is made for an invalid
format (regardless of if through extension or header) we ignore it and
return our default format.

trevormorse/frapi,frapi/frapi,nslod/frapi,frapi/frapi,nslod/frapi,frapi/frapi,nslod/frapi,nslod/frapi,winlolo/frapi,frapi/frapi,winlolo/frapi,winlolo/frapi,trevormorse/frapi,trevormorse/frapi,trevormorse/frapi,winlolo/frapi