Add comments to jest integration tests about users used in tests

test/integration/footer-links.test.js

+// these tests do not sign in as a user
+
 const SeleniumHelper = require('./selenium-helpers.js');
 
 const {

test/integration/homepage-rows.test.js

+// these tests do not sign in as a user
+
 const SeleniumHelper = require('./selenium-helpers.js');
 
 const {

test/integration/join.test.js

+// these tests do not sign in as a user
+
 const SeleniumHelper = require('./selenium-helpers.js');
 
 const {

test/integration/my-stuff.test.js

+// These tests sign in as user #1
+
 const SeleniumHelper = require('./selenium-helpers.js');
 
 const {

test/integration/navbar.test.js

+// These tests do not sign in as a user
+
 const SeleniumHelper = require('./selenium-helpers.js');
 
 const {

test/integration/project-page.test.js

+// These tests do not sign in with a user
+
 const SeleniumHelper = require('./selenium-helpers.js');
 
 const {

test/integration/sign-in-and-out.test.js

+// These tests sign in with user #0 (no number for the username)
+
 const SeleniumHelper = require('./selenium-helpers.js');
 
 const {