Added transcode section to settings
* added automatic episode number detection by searching through media_paths
* added SD/HD default bitrate params
* added HD scaling arguments
Added audio defaults to config file
Added default setting for hd width
Changed defaults for video bitrates
Fixed mplayer audio IDs for mkv files
Added pgs subtitles to those that are burnable
Added 768p bitrate default
Added current dir to search path (used in auto episode numbering)
transcoder: automatic reduced bitrate for bonus materials
Changed default audio bitrate to 192kbps
Fixed menu items to honor enabled setting
* passing None as populator creates a disabled menu item
* fixed menu navigation to skip over disabled items
Changed arg for subtitles to --sub so wouldn't conflict with specifying config file
Force gain of 0 when peak is already zero
Changed date lookup to be in one screen rather than submenus
Added new option to test experimental handbrake normalization