Introduces a new script for quickly regenerating a Heroku instance
(typically with a new IP) to handle the rare circumstances where an
instance is flagged by Google and prompted for a captcha.
The config/ dir was renamed to misc/ to avoid confusion with the Docker
mounted config volume, and to more closely match its intended purpose
(which is to contain all miscellaneous features/scripts/etc that add
functionality to Whoogle, but are not critical for general use).
