[BUGFIX] repair sending in of UniMRCP options

the changes introduced while adding sensitivity-level and
recognition-timeout were inappropriate. Undo those while keeping the new
features
Implement interface for multiple output docs

invoking new UniMRCP capabilities
changelog entry
add audio prefix for UniMRCP
strip any file extension
add spec for audiofile formatting
Merge pull request #13 from Jared-Prime/feature/US3768_utilize_unimrcp_playback

Feature US3767 Utilize UniMRCP Playback