Removed custom quality tweak from Panasonic.conf since it stops our automatic quality adjustments from working

Users can still add custom tweaks in their user settings
Formatting
Don't generate fontconfig caches if subtitles are disabled
Added initial support for Panasonic SC-BTT Blu-ray Disc Home Theater Sound Systems
Merge branch 'master' of github.com:UniversalMediaServer/UniversalMediaServer