[galaxy-dev] Missing Page Editor Components

Hi all, Wonder if I can get some help from here for the following questions: I just pulled the galaxy-central and installed it. It runs fine. However, when I tried to use the Edit Pages function, there is no "Embed Galaxy Object" and "Insert Link to Galaxy Object" in the "Page Editor". I have set the "enable_pages = True" in "universe_wsgi.ini". Wonder what else can cause the problem? Also, is there any documentations for the control syntax used in datatypes and tools configure xmls? Thanks! Charlie