Documented simulating an authentication by manual token creation.
Fixing a bad merge conflict
Add a new section on front controllers and the AppKernel
Some updates
Markup fixes and small changes
Even more GH feedback, some additional notes and typos
GH feedback
Not mention the Debug Component until it's ready
Mentioning the Debug component again as it has just been merged into master.
[#2465] Proofreading new environment, front controller, kernel doc
[#2465] Fixing tiny typo
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