Management command should lower log level pending verbosity

[ghost]

There's an informational logging message in the etag implementation:

collectfast/collectfast/etag.py

Line 120 in 8bcdd77

logger.info("%s: Hashes did not match" % path)

This is shown if collectstatic is run with verbosity 0 and should not be. This can be fixed in the management command by using logging.disable() if verbosity is zero.

[antonagestam]

Logging needs a major overhaul. The management command needs to somehow be setup so that loggers in other modules uses the management command logging facilities.