Bug 733632: Remove SSL/TLS Version UI, r=kaie, r=bsmith

--HG--
extra : rebase_source : cc07bd85a1edca19844fa41da2b0572538fff9c7
Bug 733642: Allow the user to enable any version of TLS that libssl supports, maintaining our current defaults, r=dolske

--HG--
extra : rebase_source : 3484236a9d357b70a88387e0f27d3757db79bd4b