Print a warning when an env variable is being overriden by the config file, and reorganize the main file a bit.
Modified the JWT key generation, now it should also show the output of OpenSSL in the logs.

Removed list of mounted routes at startup by default, with option to add it back. This would get annoying when starting the server frequently, because it printed ~130 lines of mostly useless info

Improved some two factor methods.

Implement admin JWT cookie, separate JWT issuers for each type of token and migrate admin page to handlebars template

Default to $data_folder/templates and remove dev option (use `TEMPLATES_FOLDER=src/static/templates` instead)

Remove config option for admin email, embdedded admin page, managed IO::Error, and added security and cache headers globally

In the future, maybe we can do the same with the `find_by_id` methods that return an Option.

Fixed delete user when 2FA is enabled, implemented delete user for admin panel, and the front-end part for invite user. Secured admin panel behind a configurable token.

Initial version of admin panel, list users and reload user list works. No serious auth method yet, password is 'token123'

These aren't used yet, but will be utilized by the icon caching service
in a subsequent patch.

Signed-off-by: Steven Noonan <steven@uplinklabs.net>

Implemented proper logging, with support for file logging, timestamp and syslog (this last one is untested)