Merge branch 'master' into security

Merge branch 'master' into security

* master: (182 commits)
  Remove / Deactivate oldstable
  ignore EPERM as a result of the chmod of a .dak file
  EVIL SINGLE TAB CHARACTER IN LAST COMMIT EMERGENCY FIX
  changelog
  bug #
  produce changes without signature, fix delay calculation also for status
  add machine-readable status
  show_deferred
  config for show-deferred
  whitespace sanitizing
  move config to config
  message massage
  logfiles
  move show-deferred to dak
  move show-deferred to dak
  implement public access to deferred
  fix remaining days, some style
  spaces in uploader names
  validtime
  Valid-Until
  ...