Unified configuration

[the_bertrum]

I guess the issue being described here is that if a user wants to edit an MPD setting, they can press "Configure" then go straight to the MDP settings from there. If however they want to adjust a library setting and then an MPD setting, they go to the Library settings, but then only way to the MPD ssettings after that is to go to the Audio settings p[age and scroll to the MPD section and press the edit button there rather than having a shortcut like they would otherwise. There's no way to the "sub screens" directly other than through the first configure screen.