Add switchable streetmap layer
Add layer zoom limits to streetmap
Merge pull request #2 from exonian/feature/map

Feature/map
Define map icon hotspots

Map icons are registered with their top left corner as their position by
default; 'hotspots' allow movement of this point to a more logical one
(typically the center for symbolic icons and the point for pointer
icons).
Update map line colours
Update bus numbers on rail route description
Add hogacre marker to map
Require django-toolbelt
Remove s3 config
Configure wsgi to wrap app with Cling
Merge branch 'feature/cling' into develop
Add third party theme

Theme is non-bootstrap so we'll need to do some wrangling of both the
css and the markup to get the best out of it.
Start customising theme
Add favicon
Add more theme elements
Style name area and panels
Tweak date styling
Apply theme to side nav
Even more nav styling
Button styling