refactoring url_links
refactoring inboundfinder to make it reusable for b2ghaystack and use futures.concurrent for faster inbound builds info downloads
fix inboundfinder.cli and some coding style issues
Bug 1029449 - Don't download builds just to get revision metadata
Merge branch '1029449' of https://github.com/parkouss/mozregression

Conflicts:
	mozregression/regression.py
	mozregression/runinbound.py
	mozregression/runnightly.py