Add tinymce to page_part edit for text

app/assets/javascripts/site_editor.js

@@ -12,4 +12,6 @@
 //= require orbit-1.0
 //= require orbit-bar-search
 //= require side_bar_history
-//= require page_edit
+//= require page_edit
+//= require tinymce-jquery
+//= require tinymce_orbit