Add test scripts for current API calls for Up app

[stellanl]

These should test the basic functionality of the API endpoints that Up uses.

Requirements:

• A test user account in RSR so we can obtain an API key and access non-public functions. It must be connected to an organisation with at least one project for which at least one update is posted. Both project and update should have photos.

[stellanl]

Minimal read-only session URL usage:
Success is if all calls return 2nn codes.

1. Get an API key; "Logging in"

POST /auth/token
with a body of
username={testuser}
password={pwd}
and returns a body like this
{
"username": "teststellan",
"user_id": 1465,
"organisations": [411, 411, 361],
"allow_edit_projects": [4412, 4241, 467, 293],
"api_key": "fe30377723549e09e0707b4d3518fcb5977f7e09",
"published_projects": [4412, 4241, 2036, 2035, 2034, 2033, 2031, 2029, 2024, 2022, 2021, 1336, 1117, 1114, 852, 677, 659, 467, 293, 284, 275, 138, 54]
}

2. Fetching project data
   nnn is one of the published projects ids returned in (1)
   The API key must be supplied in an Authorization: header as "Token " + api_key

GET /rest/v1/project_up/nnn/?format=xml&image_thumb_name=up&image_thumb_up_width=100
GET /rest/v1/country/?format=json&limit=50
GET /rest/v1/project_update/?format=xml&project=nnn&last_modified_at__gt=1970-01-01T00:00:00
Up then fetches data for all users referenced by the updates:
GET /rest/v1/user/uuu/?format=json&depth=1
and all the organisations the users are employed by
GET /rest/v1/organisation/ooo/?format=json
and finally the images for projects and updates
GET /db/project/2/update/5298/ProjectUpdate_5298_photo_2014-07-24_13.35.05.jpg

[KasperBrandt]

Test plan

Wait for the tests to run and successfully complete.