settings(UI): add legal links to settings page
fix(client): Show the /force_auth error message on startup, if one exists.

* `.error` elements are invisible by default. Add the `.visible` class.

fixes #1504
Merge pull request #1498 from mozilla/issue-1371

settings(UI): add legal links to settings page

Looks great, even on small screens. Thanks @johngruen
Merge pull request #1505 from mozilla/issue-1504-invisible-error-on-force-auth

fix(client): Show the /force_auth error message on startup, if one exists.
changes to run against stage (or other) remote server
test as two separate assertions
add intern.config.asyncTimeout setting