Migrate existing endpoints

[chrisjsewell]

and also the tests (see #4)

from a call to the current API:

{
  "data": {
    "available_endpoints": [
      "calcjobs        GET,HEAD,OPTIONS     /api/v4/calcjobs/<id>/input_files/",
      "calcjobs        GET,HEAD,OPTIONS     /api/v4/calcjobs/<id>/output_files/",
      "computers       GET,HEAD,OPTIONS     /api/v4/computers/",
      "computers       GET,HEAD,OPTIONS     /api/v4/computers/<id>/",
      "computers       GET,HEAD,OPTIONS     /api/v4/computers/page/",
      "computers       GET,HEAD,OPTIONS     /api/v4/computers/page/<int:page>/",
      "computers       GET,HEAD,OPTIONS     /api/v4/computers/projectable_properties/",
      "groups          GET,HEAD,OPTIONS     /api/v4/groups/",
      "groups          GET,HEAD,OPTIONS     /api/v4/groups/<id>/",
      "groups          GET,HEAD,OPTIONS     /api/v4/groups/page/",
      "groups          GET,HEAD,OPTIONS     /api/v4/groups/page/<int:page>/",
      "groups          GET,HEAD,OPTIONS     /api/v4/groups/projectable_properties/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/contents/attributes/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/contents/comments/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/contents/derived_properties/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/contents/extras/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/download/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/links/incoming/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/links/incoming/page/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/links/incoming/page/<int:page>/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/links/outgoing/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/links/outgoing/page/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/links/outgoing/page/<int:page>/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/links/tree/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/repo/contents/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/<id>/repo/list/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/download_formats/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/full_types/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/full_types_count/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/page/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/page/<int:page>/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/projectable_properties/",
      "nodes           GET,HEAD,OPTIONS     /api/v4/nodes/statistics/",
      "processes       GET,HEAD,OPTIONS     /api/v4/processes/<id>/report/",
      "processes       GET,HEAD,OPTIONS     /api/v4/processes/projectable_properties/",
      "querybuilder    GET,HEAD,POST,OPTIONS /api/v4/querybuilder/",
      "server          GET,HEAD,OPTIONS     /api/v4/",
      "server          GET,HEAD,OPTIONS     /api/v4/server/",
      "server          GET,HEAD,OPTIONS     /api/v4/server/endpoints/",
      "users           GET,HEAD,OPTIONS     /api/v4/users/",
      "users           GET,HEAD,OPTIONS     /api/v4/users/<id>/",
      "users           GET,HEAD,OPTIONS     /api/v4/users/page/",
      "users           GET,HEAD,OPTIONS     /api/v4/users/page/<int:page>/",
      "users           GET,HEAD,OPTIONS     /api/v4/users/projectable_properties/"
    ]
  },
  "method": "GET",
  "path": "/api/v4",
  "query_string": "",
  "resource_type": "Info",
  "url": "https://15.188.110.176:5000/api/v4",
  "url_root": "https://15.188.110.176:5000/"
}