codemirror: display an animation in window title so that the window flash when...

codemirror: display an animation in window title so that the window flash when component has been saved.

Use case: save component on one tab, go to "run live test" tab and wait for component to be saved to make sure code runs with latest version
(cherry picked from commit 98e208f5)

bt5/erp5_code_mirror/SkinTemplateItem/portal_skins/erp5_code_mirror/code_mirror_support.xml

@@ -237,6 +237,8 @@
  function saveDocument(cm, event) {\n
    event.stopPropagation();\n
    event.preventDefault();\n
+   var document_title = document.title;\n
+   document.title = "💾💤 " + document_title\n
 \n
    clickSaveButton(\'Base_edit\');\n
 \n
@@ -271,6 +273,11 @@
                url: \'getTranslatedValidationStateTitle\',\n
                success: getTranslatedValidationStateTitleHandler});\n
      }\n
+\n
+     document.title = "💾✔ " + document_title\n
+     setTimeout(function() {\n
+       document.title =  document_title\n
+     }, 500);\n
 \n
      updateErrorWarningMessageDivWithJump();\n
 \n