Added images

Added TeX/TiKZ -> PDF -> PNG chain to build-scripts.
Added EPUB packaging to build-scripts.
Included images to XHTML files.
Updated EPUB manifest.
Played with fonts, added some basic layout.

* Also debugging info & stuff.
* Added \noindents back.
* @font-face specs are here without actual font binaries. They will
  be commited as soon as the font choice is stablizied.
More layout
And more layout
And even more (maths & bibliography)
And even more. Also added ToC.
Added cover page.
Math layout tweaks.
Various layout tweaks (sections, math, etc.)
Replaced "logo" with manual small-caps.
Casuistics.
Added syntax highlight.
Various fixes + fix for chapter 5 in OPF.
* Greek is now typeset using math fonts.
* Removed parentheses from the numbered lists.
* Fixed chapter 5 path in OPF so it can be displayed again.
* Moved all non-font-size properties in CSS
  to font-size-relative units.
* Fixed math font size in headers.
Added fonts.
Added variable font size.
Updated README
Merged branch 'epub'.