Fix PROJECT_DIR path
Use RawConfigParser to avoid configparser.InterpolationSyntaxError
Improved news import management command

Improvements:

- Show progress bar while importing, using tqdm

- Support --verbosity flag, and be more verbose accordingly

- In case of error, show what file path, where error occurred.
Script for runing tests
Fix failing news import tests
Remove outdated comment
Do not duplicate news items if one already exists