Fix consent "required" flag

Author: petr-k

source/IdentityServer3.Contrib.Localization.UI/assets/_consent.html

@@ -31,7 +31,7 @@ <h1>
                             <strong>{{scope.displayName}}</strong>
                             <span ng-show="scope.emphasize" class="glyphicon glyphicon-exclamation-sign"></span>
                         </label>
-                        <span ng-show="scope.required"><em>(required)</em></span>
+                        <span ng-show="scope.required"><em>[[consent.required]]</em></span>
                         <div class="consent-description" ng-show="scope.description">
                             <label for="scopes_{{scope.name}}">{{scope.description}}</label>
                         </div>