More robust logging and outputs for all exceptions

[mrjoshuap]

This is a change to ensure that logging is configured in a sane fashion. I reworked the configuration so that it will honor LOGLEVEL except when DEBUG is enabled. Arguments maybe on the best implementation, but I'm running in Kubernetes and want to see warnings+ only.

Description

Found all exception catches, they now print warnings. Could argue some might be better as debug/info. Found missing import logging and added appropriate logger = setup.

Steps

With DEBUG=False

1. Run MediaCMS, set DEBUG=False and LOGLEVEL to [DEBUG|INFO|WARN|ERROR]

2. Outputs ONLY to console, no files, LOGLEVEL and up.

3. Logs should properly be logged, filtered and things will be more obvious.

4. Run MediaCMS, set DEBUG=True and LOGLEVEL is ignored

5. Outputs to console AND error_files

6. Logs should be properly logged, filtered and things will be way more verbose