Fix embargo patch having the wrong color

* the previously used fix (lost during adjustment for new release) was
  re-applied

invenio_theme_tuw/assets/semantic-ui/less/invenio_theme_tuw/theme.less

@@ -62,4 +62,3 @@ div.ui.label.access-right.embargoed,
 span.ui.label.access-right.embargoed {
  background-color:#ffbf00
 }
-

invenio_theme_tuw/templates/invenio_theme_tuw/record_landing_page.html

@@ -38,7 +38,7 @@
             </div>
             <div class="right floated right aligned column">
               <span class="ui label small grey">{{ record.ui.resource_type }}</span>
-              <span class="ui label small access-right {{ record.ui.access_right.icon }}">
+              <span class="ui label small access-right {{ record.ui.access_right.category }}">
                 <i class="icon {{ record.ui.access_right.icon }}"></i>{{ record.ui.access_right.title }}</span>
             </div>
           </div>