Work around BL-802 by hiding those fonts that will have problems.

https://bugzilla.mozilla.org/show_bug.cgi?id=1108866 explains the issue. The work-around here is to just look at the names of these fonts and skip those with certain adjectives. It might not be a comprehensive list.
Merge pull request #182 from BloomBooks/BL802FontsWithModifiersShowDefaultFont

Work around BL-802 by hiding those fonts that will have problems.