Regterschot

Pull request #15: Feature/login

Merge in SMAL/regterschot from feature/login to master

* commit 'ce884c56c0a0729d9e96f7190a8d1c5b43d3bc5f':
  Update HelloWorldResource.java
  added exception LoginCredentials removed nopasswordfound exception
  removed argon2 deprecated method
  removed idea + target foler, added randomtoken generator, added loginResource, changed getUser DAO
  ExceptionMapper for password
  Password Hashing
  Correct change for wrong user/password
  No more comments
  removed imports not being used
  User database tabel changed
  user table updated
  Change in username code
  Revert "Exception thrown"
  Exception thrown
  Database connection perfection
  Fixed login
  BEANS WHAT THE
  CORS Filter
  gitignore onnodige dingen weg