Add affordability indicator.
Merge pull request #254 from WorldBank-Transport/feature/add-affordability-indicator

Add affordability indicator.
Add AdHoc system tests
Merge pull request #256 from moradology/feature/test-system

Add AdHoc system tests
Tune Postgres on install
Ignore TAGS, etc.
Merge pull request #257 from flibbertigibbet/feature/tune-postgres

Tune Postgres on install
Move JVM options to file in sbt root
Refactor indicators to use more parameters

Indicators now have access to a wider range of
parameters that they will need and will help
prevent recalculating common parameters multiple
times. It is also now possible to use parameters
that rely on fetching information from the
database.
Refactor tests/indicators to use new parameters
Break out static params into their own trait

Also fix some syntax errors
Merge pull request #258 from WorldBank-Transport/feature/refactor-params

Feature/refactor params
Fix postgres config
Run GTFS tests in travis
Log how long it takes each step in the GTFS import
Merge pull request #261 from WorldBank-Transport/feature/run-gtfs-tests

Run GTFS tests in travis
Parameterize GTFS parser, add realtime test data
Fix display of Average Service Frequency
Make timer object on gtfs project
Merge pull request #262 from WorldBank-Transport/feature/fix-asf-display

Fix display of Average Service Frequency