Create a welcome page for the test_project demo. The reason behind this is
that we are getting more and more demos outside admin. In the past the
admin welcome page was just enough. Right now, I see a need to create a
placeholder page, with descriptions of some demos, what do they do.

In the future, demos could extend base.html file and use some CSS and
breadcrumbs and improve their look.
Complete previous commit
Add a really simple demo, for concepts from the documentation http://django-autocomplete-light.readthedocs.org/en/latest/tutorial.html#javascript-api-concepts
Reformat the file AND include all the notes from @jpic
Reformat the file AND include all the notes from @jpic
Extend the demo, add some comments
Merge pull request #122 from mpasternak/master

Add a welcome page for the test_project