Add timestamp arrays to resource collection and API

[karlbenedict]

Push timestamps into timestamp arrays for:

• Successful link checks
• Unsuccessful link checks
• Outgoing connections to resources

API get to retrieve these arrays for client analysis & presentation

[hbarrett]

Example document might look like the following:

{"id":"22444850-edac-4e17-8c1e-1a5aed92ef2f",
  "success":["1970-01-01 00:00:01","1970-01-02 00:00:01",
  "fail":["1970-01-01 00:00:01"],
  "access":["1970-01-01 00:00:01"],
}

[hbarrett]

Access route works, (/api/access/), but the URL audit needs work.