Revert HTTParty upgrade. Breaks TVDB & IMDB party.

HTTParty now uses Procs in its HTTParty::Response objects, and since
Procs are un-serializable it breaks the uses of Marshall.dump for
caching in HTTParty::Icebox. Both TVDBParty & IMDBParty rely on this.

See here for more details:
https://github.com/jnunemaker/httparty/issues/143
Fix issue with header colours on homepage.
Towards correcting auto-populated media info.