firefox/user.js, new fonts, fontconfig, modeliner

updated install.sh, better test mode and changed some semantics
added support for Firefox via ghacks user.js
changed xdg-open to just firefox in .Xresources
moved fonts dir out of xorg
changed .gitignore to look for moved font .uuids
added Adobe Source fonts and license
added Dina license
added fontconfig conf
added vim modeliner plugin
enabled vim modelines (!!!), a more secure option is desired