#53 Support \sectionfont and \subsectionfont

[Orion Poplawski]

We see that the section headings which were in
roman numerals are all being converted to arabic,
and being re-sized significantly.

Errors from latex2rtf which may be relevant:

AFRL_Status_Report_2.tex:14  Unknown command '\sectionfont'{\fs29 }
AFRL_Status_Report_2.tex:15  Unknown command '\subsectionfont'{\fs24 \i0\scaps0\b }
AFRL_Status_Report_2.tex:16  Unknown command '\subsubsectionfont'{\fs24 \scaps0\b0\i }