implementation of some patches from Analogus ZORK-Edition

[GoogleCodeExporter]

Started implementing Analogus CSS-tweaks for 300/505
See: 
http://code.google.com/p/prs-plus/source/detail?r=3d3d9b3615d77a7792c7088d085a1a
04264bf90d
Giving 7 extra font-sizes per base-fontsize and control for 
linehigh/linespacing, indent, and margin (the latter not working with my two 
(2) testfiles)

Ideas and some code taken form: 
http://code.google.com/r/josefmichaleck-analogus-cons/source/browse

Will also try to bring CSS-tweaks and font-size-overlay from the ZORK-Edition 
to standard PRS+ for 600/x50, same goes for enhanced GIU navigation.

Original issue reported on code.google.com by [email protected] on 2 Sep 2012 at 7:11