Fix failing tests

What was failing:

- news item view was missing slug argument

- news item url was to global

- standard_page.html template was moved to pages app
Fix pylint/pep8 errors

Also did small refactoring to normalize view function naming.
Wagtail upgrade from 0.6 to 0.8.1

Damn, they are faster than us.
New app called web

This app will contain all general web related things.
Switch to django-nose package

Test coverage was needed. Django coverage is not working at all. It could be
because it is not compatible with Django 1.7. So we switched to Django-nose and
it works OK.
Add stub Django app

Moved stub functionality to separate Django app. No logic allowed at project
level, everything should be moved to separate apps.