fixup! erp5_web_renderjs_ui: datetime field formats date in the interface language

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_datetimefield_js.js

@@ -238,16 +238,33 @@
               gadget_list = result_list[1],
               text_content = "",
               state_date,
+              locale_formatted_state_date,
               offset_time_zone;
             if (gadget.state.value) {
               state_date = new Date(gadget.state.value);
+              /* Ideally we would like to use {timeStyle: "short"} as option
+               * to hide seconds. Unfortunately it doesn't work in older
+               * versions of firefox. Luckily, by using
+               *   {hour: "numeric", minute: "numeric"}
+               * it hides seconds, and still respects the locale.
+               * >> date = new Date(2019, 1, 1, 1, 1)
+               * >> date.toLocaleTimeString(
+               *      'en', {hour: "numeric", minute: "numeric"}
+               *    )
+               *    "1:01 AM"
+               * >> date.toLocaleTimeString(
+               *      'fr', {hour: "numeric", minute: "numeric"}
+               *    )
+               *    "01:01"
+               */
+              locale_formatted_state_date = state_date.toLocaleTimeString(
+                language,
+                {hour: "numeric", minute: "numeric"}
+              );
               if (gadget.state.timezone_style) {
                 text_content = state_date.toLocaleDateString(language);
                 if (!gadget.state.date_only) {
-                  text_content += " " + state_date.toLocaleTimeString(
-                    language,
-                    {timeStyle: "short"}
-                  );
+                  text_content += " " + locale_formatted_state_date;
                 }
               } else {
                 //get timezone difference between server and local browser
@@ -256,10 +273,7 @@
                 state_date.setUTCHours(state_date.getUTCHours() + offset_time_zone);
                 text_content = state_date.toLocaleDateString(language);
                 if (!gadget.state.date_only) {
-                  text_content += " " + state_date.toLocaleTimeString(
-                    language,
-                    {timeStyle: "short"}
-                  );
+                  text_content += " " + locale_formatted_state_date;
                 }
               }
             }

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_datetimefield_js.xml

@@ -228,7 +228,7 @@
                   </item>
                   <item>
                       <key> <string>serial</string> </key>
-                      <value> <string>980.48184.20620.63641</string> </value>
+                      <value> <string>980.55051.50282.19404</string> </value>
                   </item>
                   <item>
                       <key> <string>state</string> </key>
@@ -246,7 +246,7 @@
                           </tuple>
                           <state>
                             <tuple>
-                              <float>1577760705.94</float>
+                              <float>1577775957.85</float>
                               <string>UTC</string>
                             </tuple>
                           </state>