Refactor session db logging and key generation for sessions/otks While I was working on the redis sessiondb stuff, I noticed that log_wanrning, get_logger ... was duplicated. Also there was code to generate a unique key for otks that was duplicated. Changes: creating new sessions_common.py and SessionsCommon class to provide methods: log_warning, log_info, log_debug, get_logger, getUniqueKey getUniqueKey method is closer to the method used to make session keys in client.py. sessions_common.py now report when random_.py chooses a weak random number generator. Removed same from rest.py. get_logger reconciles all logging under roundup.hyperdb.backends.<name of BasicDatabase class> some backends used to log to root logger. have BasicDatabase in other sessions_*.py modules inherit from SessionCommon. change logging to use log_* methods. In addition: remove unused imports reported by flake8 and other formatting changes modify actions.py, rest.py, templating.py to use getUniqueKey method. add tests for new methods test_redis_session.py swap out ModuleNotFoundError for ImportError to prevent crash in python2 when redis is not present. allow injection of username:password or just password into redis connection URL. set pytest_redis_pw envirnment variable to password or user:password when running test.

This directory has some detector examples that you can use to get
ideas on implementing your own detectors.

These are provides on an as-is basis. When they were added, they
worked for somebody and were considered a useful example.

The roundup team will attempt to keep them up to date with major
changes as they happen, but there are no guarantees that these will
work out of the box. If you find them out of date and have patches to
make them work against newer versions of roundup, please open an issue
at:

   https://issues.roundup-tracker.org

The current inventory is:

creator_resolution.py - only allow the creator of the issue to resolve it

emailauditor.py - Rename .eml files (from email multi-part bodies) to
                  .mht so they can be downloaded/viewed in Internet Explorer.

irker.py - communicate with irkerd to allow roundtup to send announcements
           to an IRC channel.

newissuecopy.py - notify a team email address (hardcoded in the script)
		  when a new issue arrives.

newitemcopy.py - email the DISPATCHER address when new issues, users,
                 keywords etc. are created. Kind of an expanded version
		 of newissuecopy.