docs: Add section on extension config and disabling
docs: Add section on extension config and disabling

jcass77/mopidy,jodal/mopidy,adamcik/mopidy,rawdlite/mopidy,tkem/mopidy,bencevans/mopidy,hkariti/mopidy,bencevans/mopidy,dbrgn/mopidy,quartz55/mopidy,jmarsik/mopidy,abarisain/mopidy,mopidy/mopidy,pacificIT/mopidy,ali/mopidy,priestd09/mopidy,bacontext/mopidy,liamw9534/mopidy,swak/mopidy,tkem/mopidy,diandiankan/mopidy,dbrgn/mopidy,pacificIT/mopidy,vrs01/mopidy,glogiotatidis/mopidy,quartz55/mopidy,dbrgn/mopidy,vrs01/mopidy,pacificIT/mopidy,bacontext/mopidy,mokieyue/mopidy,jmarsik/mopidy,priestd09/mopidy,ZenithDK/mopidy,hkariti/mopidy,liamw9534/mopidy,dbrgn/mopidy,bacontext/mopidy,tkem/mopidy,rawdlite/mopidy,mokieyue/mopidy,ZenithDK/mopidy,diandiankan/mopidy,ZenithDK/mopidy,SuperStarPL/mopidy,kingosticks/mopidy,pacificIT/mopidy,jmarsik/mopidy,hkariti/mopidy,priestd09/mopidy,hkariti/mopidy,vrs01/mopidy,ali/mopidy,swak/mopidy,diandiankan/mopidy,jmarsik/mopidy,bencevans/mopidy,mopidy/mopidy,glogiotatidis/mopidy,SuperStarPL/mopidy,kingosticks/mopidy,jodal/mopidy,ZenithDK/mopidy,rawdlite/mopidy,vrs01/mopidy,adamcik/mopidy,bacontext/mopidy,mokieyue/mopidy,kingosticks/mopidy,glogiotatidis/mopidy,diandiankan/mopidy,ali/mopidy,jcass77/mopidy,ali/mopidy,jcass77/mopidy,tkem/mopidy,rawdlite/mopidy,swak/mopidy,woutervanwijk/mopidy,mokieyue/mopidy,SuperStarPL/mopidy,quartz55/mopidy,glogiotatidis/mopidy,mopidy/mopidy,quartz55/mopidy,SuperStarPL/mopidy,woutervanwijk/mopidy,abarisain/mopidy,adamcik/mopidy,bencevans/mopidy,swak/mopidy,jodal/mopidy