*_ui_test: make Zelenium tests compatible with Zope4 ZMI

The status message no longer use system-msg class, use simpler
"assertTextPresent" that should be enough.

Simplify the waiting for static pages, clickAndWait is enough.

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

@@ -120,14 +120,13 @@
 
 
 <tr>
-  <td>click</td>
+  <td>clickAndWait</td>
   <td>//input[@value='Save Changes']</td>
   <td></td>
 </tr>
-
 <tr>
-  <td>waitForElementPresent</td>
-  <td>//div[@class='system-msg']</td>
+  <td>assertTextPresent</td>
+  <td>Content changed</td>
   <td></td>
 </tr>
 
@@ -170,18 +169,16 @@
 
 
 <tr>
-  <td>click</td>
+  <td>clickAndWait</td>
   <td>//input[@value='Save Changes']</td>
   <td></td>
 </tr>
-
 <tr>
-  <td>waitForElementPresent</td>
-  <td>//div[@class='system-msg']</td>
+  <td>assertTextPresent</td>
+  <td>Content changed</td>
   <td></td>
 </tr>
 
-
 </tbody></table>
 </body>
 </html>
\ No newline at end of file

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

@@ -68,14 +68,13 @@
 </tr>
 
 <tr>
-  <td>click</td>
+  <td>clickAndWait</td>
   <td>//input[@value='Save Changes']</td>
   <td></td>
 </tr>
-
 <tr>
-  <td>waitForElementPresent</td>
-  <td>//div[@class='system-msg']</td>
+  <td>assertTextPresent</td>
+  <td>Content changed</td>
   <td></td>
 </tr>
 
@@ -172,18 +171,16 @@
 </tr>
 
 <tr>
-  <td>click</td>
+  <td>clickAndWait</td>
   <td>//input[@value='Save Changes']</td>
   <td></td>
 </tr>
-
 <tr>
-  <td>waitForElementPresent</td>
-  <td>//div[@class='system-msg']</td>
+  <td>assertTextPresent</td>
+  <td>Content changed</td>
   <td></td>
 </tr>
 
-
 </tbody></table>
 </body>
 </html>
\ No newline at end of file