Adding jedi (python) + virtualenvwrapper.

Thanks to @pauldmccarthy for tips on jedi configuration.
Markdown tweak to not break inside liquid tags

(Since I mostly use markdown with Jekyll, using occasional liquid tags)
Add elpa to .gitignore
Sort .gitignore
Add python-django, magit-like interface for django

See http://from-the-cloud.com/en/emacs/2013/01/28_emacs-as-a-django-ide-with-python-djangoel.html