------------------------------------------------------------------------------
cHeistServeSingle :: ByteString -> Handler b (Heist b) ()
cHeistServeSingle t =
    cRender t <|> error ("Template " ++ show t ++ " not found.")
cHeistServeSingle :: ByteString -> Handler b (Heist b) ()
cHeistServeSingle t =
    cRender t <|> error ("Template " ++ show t ++ " not found.")
cHeistServeSingle t =
    cRender t <|> error ("Template " ++ show t ++ " not found.")