Switch routes filter to dropdown
Prep for pointing leaflet map to scenario db
Trigger service date validation on load.
Also read service dates as UTC.
Validate sample periods are within date range when checking indicator configuration.

Fixes #452.
Cleanup route-done view

Disable back button on trip create success
Display route long name on success
Test translate attribute directive on route-done view
Add existing stops to trip via utfgrid click

Includes popup to allow the user to verify their choice
with stop name
Update route-edit view with context dependent text
Fix LengthSpec

This isn't so much a fix as changing the expected values to match what
is occurring. As best we can tell, the current test was written at a
point when ScheduledStops were not being filtered out of TransitSystems
if they fell outside of the SamplePeriod for a given indicator
calculation. Manually disabling the stop filtering fixes the LengthSpec,
but is not expected behavior and causes many other tests to fail.

It appears that the LengthSpec was broken by adding / fixing the stops
pruning functionality, but that in all the confusion around the
refactor, it was missed until later when we thought it was due to the
geometry changes. The indicator has been manually verified to be working
correctly using QGIS, so these values should be correct. If they're not,
then it's most likely a problem relating to how transit systems are
constructed, rather than a problem with the Length indicator.
Merge pull request #470 from WorldBank-Transport/feature/scenario-cleanup-1

Feature/scenario cleanup 1
Merge pull request #468 from flibbertigibbet/feature/validate-sample-period

Feature/validate sample period
Merge pull request #471 from WorldBank-Transport/feature/length-test-fix

Fix LengthSpec
Account for queued indicator calculation status
Merge pull request #472 from WorldBank-Transport/feature/queued-status

Account for queued indicator calculation status
Add "Finish and Calculate Indicators" link to scenario overview
Grey out "Finish and Calculate Indicators" on click