support contentWidth/Height for rich editor _$getAreaBox
support contentWidth/Height for rich editor _$getAreaBox

NEYouFan/nej-framework,JuneAndGreen/nej,JuneAndGreen/nej,jesseband/nej,jesseband/nej,NetEaseWD/NEJ,NEYouFan/nej-framework,NetEaseWD/NEJ