web_renderjs_ui: enable google login

using the same "image button" approach as for erp5_xhtml_style

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_nojqm_css.css

@@ -1045,6 +1045,19 @@ div[data-gadget-scope='header'] .ui-header ul {
 .gadget-content button[name='action_update']:active {
   background-color: #a9a9a9;
 }
+.gadget-content .sign_in_with_google {
+  height: 46px;
+  width: 191px;
+  display: inline-block;
+  overflow: hidden;
+  margin-top: 6pt;
+}
+.gadget-content .sign_in_with_google img:hover {
+  margin-top: -46px;
+}
+.gadget-content .sign_in_with_google img:active {
+  margin-top: -92px;
+}
 @media not screen and (max-width: 85em) {
   div[data-role='page']:not(.desktop-panel-hidden) .gadget-content {
     margin-left: 180pt;

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_nojqm_css.xml

@@ -264,8 +264,8 @@
                           </tuple>
                           <state>
                             <tuple>
-                              <float>1574438678.87</float>
-                              <string>UTC</string>
+                              <float>1593579172.65</float>
+                              <string>GMT+2</string>
                             </tuple>
                           </state>
                         </object>

bt5/erp5_web_renderjs_ui/SkinTemplateItem/portal_skins/erp5_web_renderjs_ui/erp5css.less.txt

@@ -1200,6 +1200,20 @@ div[data-gadget-scope='header'] .ui-header {
     .renderPageSubmitButton(@grey);
   }
 
+  .sign_in_with_google {
+    height: 46px;
+    width: 191px;
+    display: inline-block;
+    overflow: hidden;
+    margin-top: @margin-size;
+  }
+  .sign_in_with_google img:hover {
+    margin-top: -46px;
+  }
+  .sign_in_with_google img:active {
+    margin-top: -92px;
+  }
+
   @media @desktop {
     div[data-role='page']:not(.desktop-panel-hidden) & {
       // Keep the panel always visible