Antisamy - Allow some more CSS styles based on a recent Word doc

Here were the specific errors

• The span tag had a style attribute, "font-family", that could not be allowed for security reasons.
  Need to add tahoma, trebuchet ms. And have to allow multiple specified.

• The td tag had a style attribute, "text-fit", that could not be allowed for -security reasons.
  I don't know what this tag does, but need to add it.

• The br tag contained an attribute that we could not process. The clear attribute has been filtered out, but the tag is still in place. The value of the attribute was "all".
  Need to add all as a literal value. Looks like this is deprecated as an attribute on the br

• The p tag had a style attribute, "margin-right", that could not be allowed for security reasons.
• The p tag had a style attribute, "margin-left", that could not be allowed for security reasons.
  These had a negative length, I guess this is acceptable?