Set the global variable "CKEDITOR_BASEPATH" if defined (closes #15956422)

README

 Summary
 -------
 WYSIWYG js editor with ckeditor
+
+
+If don't want to use ckeditor from //cdn set following variables in
+uiprops of your main cube:
+
+  CKEDITOR_URL = data('ckeditor/ckeditor.js')
+  CKEDITOR_BASEPATH = data('ckeditor/')

__init__.py

@@ -28,6 +28,9 @@ def fckeditor_config(self):
         }
       }, 200);
     ''')
+    base_path = self.uiprops.get('CKEDITOR_BASEPATH')
+    if base_path:
+        self.html_headers.define_var('CKEDITOR_BASEPATH', base_path)
     self.html_headers.define_var('cklang', self.lang)
     self.html_headers.define_var('ckconfigpath',
                                  self.data_url('ckeditor-config.js'))