Add pandoc-citeproc with dependencies.

Signed-off-by: Magnus Therning <magnus@therning.org>
Updates 2014-05-30

    HTTP
    QuickCheck
    conduit
    cryptohash
    entropy
    free
    highlighting-kate
    libmpd
    semigroups
    shake
    shelltestrunner
    system-fileio
    system-filepath
    text

New dependecies added:
    either
    MonadRandom

Signed-off-by: Magnus Therning <magnus@therning.org>