Removed dependency on Django.
This allows translation work without having Django installed.
Merge pull request #51 from toolforger/remove-django-dependency

Removed dependency on Django.
fix issue #43
minor margin changes
Merge pull request #52 from areke/fix_issue_43

Fix issue 43
Use a higher resolution logo

This looks much better on high resolution devices such as the retina MacBook
Pro.

In order to keep the exact aspect ratio of the logo I had, it had to be made a
little bigger.  I made the "SymPy" header font a little bigger too to
compensate.
Add a missing news item
Update links to github
Regenerate pages
Add missing <br/>
Update html
first commit
	删除：      i18n/sympy.org.pot
finished it
	删除：      i18n/zh.pot
Merge pull request #54 from reverland/master

Add Chinese translation
Add Portuguese translation

Fixes #48
Generate pt translation
Add generated files
Add "pt" to the footer