Enable http-auth during API-Access

enabled use of real bool as setting for veriry-certs in json-file

Added pdns-api-password and http-auth parameter to Api-Init

Added auth to the api-calls. If it is working, maybe a switch would be nice.

Added params for possible api-pass (enhanced powerdns security), and http-auth in case of the use of an (nginx) http(s)-reverse proxy for even more security

Explicitly convert token to string

issue #1

issue #1