Add fay

New packages:

    fay
    fay-base
    fay-dom
    fay-jquery
    fay-text

New dependencies:

    MonadRandom
    data-lens-light
    either
    groom
    haskell-names
    haskell-packages
    hse-cpp
    language-ecmascript
    sourcemap
    spoon
    tagshare
    testing-feat
    traverse-with-class
    type-eq
    wl-pprint

New dependencies from [haskell-core]:

    Cabal
    cpphs
    ghc-paths
    tasty
    tasty-hunit
    tasty-th
    uniplate

Signed-off-by: Nicola Squartini <tensor5@gmail.com>