Add option 'Disable subtitles if audio track matches preferred language'

[zig1000]

Simple request which would allow 99% of users to set their settings once and then never again need to enable/disable subtitles manually.

Currently, there are options for a 'preferred audio language' and a 'preferred subtitle language'. However, when the audio track matches the preferred language,
subtitles are selected anyway. For those of us who don't want subtitles when we understand the audio, this forces manually disabling subtitles. If one doesn't enable subtitles by default one is forced to manually enable subtitles whenever a foreign language video is played.

[Wodduls]

Seconded.