Add TinyMCE to the toolbar

1. download TinyMCE
2. unzip tiny_mce.$version.zip
3. put tiny_mces folder to site_media/

4. modify fein/settings.py

   FEINCMS_RICHTEXT_INIT_CONTEXT = { ‘TINYMCE_JS_URL’: STATIC_URL + ‘tiny_mce/tiny_mce.js’, }