[erp5_web_renderjs_ui] Multicheckbox: handle the required parameter

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_multicheckboxfield_js.js

@@ -146,5 +146,17 @@
           });
       }
       return final_result;
-    }, {mutex: 'changestate'});
+    }, {mutex: 'changestate'})
+
+    .declareMethod('checkValidity', function () {
+      var name = this.state.name;
+      if (this.state.editable && this.state.required) {
+        return this.getContent()
+          .push(function (result) {
+            return result[name].length !== 0;
+          });
+      }
+      return true;
+    });
+
 }(window, rJS, RSVP, document));
\ No newline at end of file

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_multicheckboxfield_js.xml

@@ -230,7 +230,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>965.241.13759.3805</string> </value>
+                <value> <string>965.13193.22070.47923</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -248,7 +248,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1517321512.62</float>
+                        <float>1536328261.87</float>
                         <string>UTC</string>
                       </tuple>
                     </state>