Merge changes from topic '143'
authorFelix Dörre <felix@dogcraft.de>
Tue, 19 Jun 2018 18:20:54 +0000 (20:20 +0200)
committerGerrit Code Review <gigi-system@dogcraft.de>
Tue, 19 Jun 2018 18:20:54 +0000 (20:20 +0200)
* changes:
  add: optionally check pwned passwords
  add: PasswordHashChecker implementation
  add: DelegatingPasswordChecker implementation
  chg: move PasswordChecker object to Gigi class
  add: PasswordChecker interface


Trivial merge