Make Automatic serialize lists and tuples

[chrisdone]

Automatic only serializes data-declared non-parametric data types. People want lists and tuples to work:
#244
#250

Someone's gonna have to extend the Automatic serialization for lists, tuples, etc. It should be just a case of typeof x == Fay$$Cons conditions.

[mgsloan]

Note that ideally this would convert lists of chars into js strings. Here's an example application of this, for a better JQuery API:

class Selectable a where

instance Selectable String
instance Selectable Text
instance Selectable Element
instance Selectable [Element]
instance Selectable JQuery

select :: Selectable a => Automatic a -> Fay JQuery
select = ffi "$(%1)"

[bergmark]

This has been dangling for quite a while :( I'm not sure if I'm covering all the cases here, anyone see any tests that should be added?

[bergmark]

@mgsloan the problem with Automatic String is that we won't be able to tell whether [] should be encoded into "" or null (empty list). Trying to decode it would break Automatic a for all Text values. Not sure if there is a good enough solution for this, other than sticking to Text.