Missing i in variable decl.
Fixed bug in markdown and parser

* ManItems were created with wrong labels for KeyDependent ...
* Markdown did not work if there was a " -" in the middle of the line
Fixed bug in string parsing logic caused by .autodoc files.
Added support for own documentclass

and complete LaTeX header replacement.
This closes #54.
Added CDATA in LatexOnly.
Added support for GAPDoc header options.

Closes #55.
Fixed a strange bug in gapdoc_latex_options

Apparently multiple calls of SetGapDocLaTeXOptions are not allowed.
Made option record for gapdoc set by default.

Otherwise, if no scaffold is enabled, this would have lead to
an unset variable.
Some formatting tweaks

In particular, get rid of many empty lines, which made the code
harder to read and also could prevent git from properly detecting
merge conflicts.
Fix building documentation without 'autodoc' option
Add various FIXME comments