Analytics, progress, and error message

- Add google analytics, Fixes 35
- Show youtube like nprogress bar at top
- Show the actual TripCollection fault message instead of translating it to No Arrivals :(, this is more useful
Gentrification
Merge pull request #56 from luqmaan/add-analytics-and-crapola

Add analytics and crapola
Build assets
Merge pull request #58 from luqmaan/dev

dev => gh-pages