Use Referer to determine where to redirect when logging in.

No longer need to check ?next_url, which was done insecurely.
Add --testmode/-t option to disable SESSION_COOKIE_HTTPONLY.
Apparently we find the element before the validation kicks in
Move my issues test in index.js functional testing.
Remove URL from test issue so it looks less like spam
Comment out anon reporting for now.
Smaller sleep for my issues.
Tell us when we're in test mode.
Merge pull request #279 from webcompat/referer

Handle login redirects via Referer not ?next param.