Failed attempt at running ipython notebook on run

Unable to get a single version of ipython notebook to
run when the development runserver is run. The script is
called twice and launches two versions. Committing the code
to have a look at this eventually.
Install django_extensions

Provides a shell_plus command which can be used to run
ipython notebook. Still unable to make it integrate with the
django application and import models etc.
Local copy of jquery

Making local copies of js/css files
First cut

A working first version, allows for uploading a spreadsheet
and creating a simple chart with a wizard
[#2] Modify json format in views.xld() to make the json immediately
consumable by spreadjs
Merge branch 'develop' of github.com:akvo/graph-prototype into develop

Conflicts:
	graph/apps/api/views.py