Remove get_current_user in authentication handler
Merge remote-tracking branch 'origin/refactor-db' into refactor-db

* origin/refactor-db:
  Fixing tip handler for authentication
  /login perform logout and return 200
  porcodio
  work in progress
  Implement basic unittest for tip testing
  Do not use gltime anymore
  Use the email address of the receiver as their username
  Set notification date to not NULL
  ReceiverFile table is generated, and Receiver.id referece added
  checksum fileprocess