[erp5_web_renderjs_ui] Display datetime without timezone as UTC when non editable

ERP5 doesn't provide any information about the timezone used internally.
As test doesn't know the selenium browser locale, full text can't be checked.

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_datetimefield_js.js

@@ -225,12 +225,25 @@
         queue
           .push(function (gadget_list) {
             var text_content = "",
-              state_date;
+              state_date,
+              options;
             if (gadget.state.value) {
               state_date = new Date(gadget.state.value);
-              text_content = state_date.toLocaleDateString();
-              if (!gadget.state.date_only) {
-                text_content += " " + state_date.toLocaleTimeString();
+              if (gadget.state.timezone_style) {
+                text_content = state_date.toLocaleDateString();
+                if (!gadget.state.date_only) {
+                  text_content += " " + state_date.toLocaleTimeString();
+                }
+              } else {
+                // We don't know the timezone used by erp5 to store the date
+                // display it as displayed in editable
+                options = {timeZone: "UTC"};
+                text_content = state_date.toLocaleDateString(undefined,
+                                                             options);
+                if (!gadget.state.date_only) {
+                  text_content += " " + state_date.toLocaleTimeString(undefined,
+                                                                      options);
+                }
               }
             }
             p_state.text_content = text_content;

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_datetimefield_js.xml

@@ -224,7 +224,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>956.58742.58866.48708</string> </value>
+                <value> <string>964.14294.33061.33245</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -242,7 +242,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1490624147.2</float>
+                        <float>1513610328.86</float>
                         <string>UTC</string>
                       </tuple>
                     </state>

bt5/erp5_web_renderjs_ui_test/PathTemplateItem/portal_tests/renderjs_ui_date_time_field_zuite/testSetDateTimeZone.zpt

@@ -72,16 +72,18 @@
 
 <tal:block metal:use-macro="here/Zuite_CommonTemplateForRenderjsUi/macros/save" />
 
-<tal:block metal:use-macro="here/Zuite_CommonTemplateForRenderjsUi/macros/go_to_bar_datetime_field_view" />
-
-
+<tal:block metal:use-macro="here/Zuite_CommonTemplateForRenderjsUi/macros/toggle_editable_mode" />
+<tal:block metal:use-macro="here/Zuite_CommonTemplateForRenderjsUi/macros/wait_for_content_loaded" />
 
 <tr>
-  <td>waitForElementPresent</td>
-  <td>//div[@data-gadget-scope='field_my_start_date']</td>
+  <td>assertElementPresent</td>
+  <td>//div[@data-gadget-scope='field_my_start_date']//div[@data-gadget-scope='field']//p[contains(text(), '11:00:00')]</td>
   <td></td>
 </tr>
 
+<tal:block metal:use-macro="here/Zuite_CommonTemplateForRenderjsUi/macros/toggle_editable_mode" />
+<tal:block metal:use-macro="here/Zuite_CommonTemplateForRenderjsUi/macros/wait_for_content_loaded" />
+
 
 <tr>
   <td>verifyValue</td>
@@ -100,6 +102,7 @@
   <td>//div[@data-gadget-scope='field_my_stop_date']//select</td>
   <td>+0500</td>
 </tr>
+
 </tbody></table>
 </body>
 </html>
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