* StrassenNextCheck.pm: be strict when reading check_frequency
  directive

  Only <days>d is accepted, as per bbd.pod.
* data update
* cgi-test.t: new test case for "inofficial" streets

  These are streets not found in Berlin.coords.data, but still in
  strassen, i.e. all streets starting with a "(".
* cgi-test.t: test cases for oldname support
* cgi: removed unused color coding experiment