multimedia/plexpy: Move to new project name, Tautulli

Due to Copyright infringement, the upstream project was renamed.

The software has also been updated from version 1.x to 2.x. Notable
changes and improvements:

• Automated pkg-plist
• No hardcoded user in the package. You can now more easily run the

software as another user

• Files have been moved to WWWDIR instead of PREFIX/plexpy
• Software no longer needs write access to the web root: all data is now

in /var/db/tautulli (backups, cache, logs, database)

Upgrade instructions:

• Install Tautulli
• Create /var/db/tautulli, owned by the user you will run the daemon as

(default: nobody)

• Copy your config.ini and plexpy.db to /var/db/tautulli
• Enable the service and start the software

Tautulli should automatically find your database file, rename it to
tautulli.db, and perform the required updates.

Reported by: many