Debian packaging updates.

* Rename packages to Debian Python policy compliant names.
* Use /var/log/karaage for celery log files.
* Use /var/run/karaage for celery daemon status files.

Change-Id: Iedf46cc5930b6a26d12617755269bea1eab354ab
Update documentation.

Change-Id: I2c8403c225223ed8d62db9aa8a6505e282b90314
Version 3.0.6

Change-Id: Ia40d19d6f2dd48285edb7967b5289d83a7a1983d