Documented simulating an authentication by manual token creation.
Merge pull request #2468 from jakzal/login-in-func-tests

Documented simulating an authentication by manual token creation.
[#2468] Minor tweaks to new simulating auth in test env entry
Merge branch '2.0' into 2.1
Merge branch '2.1' into 2.2
Merge branch '2.2'