More disable_elements items in the config

[Solarunit]

I think it would be nice to have more items that can be disabled by disable_elements setting.

For example:

• speed (item in the center and above the timeline)
• chapters
• every default button in the controls panel: menu, audio, etc..

[Eva]

Controls are user-defined.

uosc/src/uosc.conf

Line 81 in 0d7825a

 controls=menu,gap,subtitles,<has_many_audio>audio,<has_many_video>video,<has_many_edition>editions,<stream>stream-quality,gap,space,speed,space,shuffle,loop-playlist,loop-file,gap,prev,items,next,gap,fullscreen 

[Tomas Klaen]

All of these can be disabled in config. Use opacity and controls options.