Fix navigation bar spacing gap
Add prototype for scenario mode
Remove _controller, which has been replaced by _indicators
Fix Python tests for moved city_name.

CSV import ignores entries for city other that the user-entered one.
Add prefixes for transforms
Add prefixes for transitions
Merge pull request #174 from WorldBank-Transport/feature/style-cleanup

Add prototype for scenario
Merge pull request #178 from flibbertigibbet/feature/fix-python-tests-city-name

Fix Python tests for moved city_name.