Util.getResponseEncoding: defaultEncoding from Optional<String> to String

[pizzi80]

code simplification

[BalusC]

Not sure this is simplification as this duplicates RIConstants.CHAR_ENCODING and therefore decreases the control on the default outcome. Ideally the default outcome should be controlled in only one place not two.

[pizzi80]

Exactly, we could simplify it further,

public static String getResponseEncoding(FacesContext context) {
    return getResponseEncoding(context, null);
}

[pizzi80]

done