Basic styling changes
Regenerate pages
Change background color
Spanish Translation
Merge pull request #60 from lidavidm/typography

[WIP] Basic styling changes
fixed mateática to matemática
always SymPy with capital P
language at the bottom ordered on alphabetical order
Support page now added to template sympy.org.pot for all languages
Merge pull request #62 from eLRuLL/master

Spanish Translation
Update info on GSoC
Rework styling, sidebar markup
Move static files to submodule
Add some examples on homepage of features
Reindent template
Improved styling
Update to latest static files
Remove screenshots page
Restore old logos
Keep download, quick links cards on all pages