add style-level screening to clean_html!+discussion

note: requested by Meyer Trust.


note that this would allow us to stop supporting CSS in inclusions (which is patently ugly imo).

 

For example, we could use tinyMCE's alignment tools to add right floats (by far the most common CSS).

  --Ethan McCutchen.....2013-03-27 16:40:16 +0000