Add check for shapes.txt and no shapes_dist_traveled

This adds a warning message to the import process if
both a shapes.txt and no shapes_dist_traveled are available
since length for routes and modes will not be available.

Note: In developing this, no gtfs files with a shape_dist_traveled,
but no shapes.txt file were able to be found.
Merge branch 'develop' of github.com:WorldBank-Transport/open-transit-indicators into develop

Conflicts:
	python/django/datasources/tasks/gtfs.py
Assorted fixes to get Chicago GTFS to load.

*  Increase various timeouts
*  Bump memory (scala needed 7GB to calculate Chicago's indicators)
*  Add println statements to indicator calculations, for debugging
Make vagrant memory an environment variable setting
Rename memory env variable
Start indicator calculations ansynchronously
Remove unused OSM/OpenLayers files
Add packer AMI generation ability
Use /app directory for angular in production

This is temporary until the minification is fixed
Update AMI instructions
Merge pull request #156 from WorldBank-Transport/feature/packer-ami-generation

Feature/packer ami generation
Use future to launch async scala task
Merge branch 'feature/upload-chicago' into develop

Conflicts:
	deployment/provision.sh
	geotrellis/src/main/scala/indicators/AvgServiceFreq.scala
	geotrellis/src/main/scala/indicators/Length.scala
Fix for missing .npm
Merge pull request #163 from flibbertigibbet/feature/touch-npm

Fix for missing .npm file
added logback logging
Fix navigation bar spacing gap
Add filter for multiple indicator aggregations
Merge pull request #165 from WorldBank-Transport/feature/add-aggregation-filter

Add filter for multiple indicator aggregations
Add check to not use filter if no values provided

The filter should not be used if the query parameter is
not used. This was causing problems with deleting.