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
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