Allow assertions issued by person to be used to authenticate.  This makes it possible for "proxy idps" to work without the implementation details leaking out into others verifier implementations.

Remove en-US from the SUMO link

Before authenticating, check password length.

localize main site

<%- is an alias for <%=.

Update one unit test so all frontend tests pass.

Add new authentication related KPIs for @nmalkin

close #1825

adorn confirmations on main site (like 'd00d, sure you wanna cancel') with gettext() for proper extraction and substition

'or' was not gettext() decorated in index.ejs - allow a translator more control over the whole phrase

Minimalist implementation of support in core for Proxy IDP (a.k.a. "BigTent")

Fix cookie check cookie made into a session cookie in IE8

log reason for bad verifier assertion and increment statsd failure counter

gettextify the last portion of the about page.

add test coverage of origins that start with digits, and relax validation regex a bit - closes #2042

Cachify the logo as well.

issue #1999

i18n fixes

new regex for matching origins - issue #1981

extensive testing of i18n mechanism - including english fallback, string substition from .json files, and debug locale

new KPIs in the event stream:
* authenticate.enter_password
* authenticate.password_submitted
* authenticate.password_success
* authenticate.password_fail

Added a couple of new testHelper functions, expectedMessage and unexpectedMessage

More verbose instructions for the initial MySQL setup

Fix the slow Fennec key press response in the email field.

* Only show a hint if it is not already shown.