Google Rewrite - Python 3 Support - Plex Scanner check from specified container

[l3uddz]

Google:

• Google rewrite thus supporting team drives properly.
• Will require configuration change and drive re-authorization.
• New pip module added, thus requiring pip install of requirements.txt

Docker:

• Support for Plex Scanner check from specific container

Python3:

• Credits to sabrsorensen for PR implementing this.