* Move the "passwords do not match" on the set password screen above the first password.
* Move the "this email address and password do not match" above the email field.

* Remove the 250ms animation time.
* Update/fix unit tests.

* Slide the password fields down whenever they are shown.
* Add slideUp/slideDown, fadeIn/fadeOut to dom-jquery.js

* Remove the signup page and all remnants of it.

* If the user types in a known secondary, redirect the user to the signin page.
* If the user manually clicks the "new to persona?" or "Existing account?" links, clear the stored email address.

* If the user enters an unknown secondary email, redirect them to the /signup page.
* If the user arrives with a known secondary email in storage, show the password field.

fixes #2116

improve i18n of main site - strings for translators should not include site implementation details (links, ids, etc) - this prevents accidental breakage and allows us to change our ids and links without requiring retranslation.  closes #2093

issue #1716

A lot of cleanup to make the site smoother, IE8 fixes, removing dead code, make the arrow transition smoother.

* On the main page, update card with new design.
* Simplify a lot of styles and layout.
* Clean up the "about page"
* Using css transitions for the arrow slide.
* Change all BrowserID text to Persona.
* Fix a problem on the main site where the footer would was not at the bottom in Webkit and Opera browsers.
* Fix the background color or IE8 in the signUpForm and congrats messages.
* When signing in to the main site, use a tooltip instead of error message on incorrect password.

* A lot of bulk changes to both the main site and dialog.  Updated color schemes, background colors, etc.

* Secondary links all are some shade of dark grey/black with a dotted underline.
* Change the font used on the "about" page to be the standard Helvetica Neue except for the header.
* Change the style of link in the TOS/PP to black text with a dotted underline.
* Loads more link updates!
* A lot of cleanup to remove duplicate `color: #549fdc` entries by using the action class.
* On the main site, put the action links to the far left of the main button.
* Reduce the amount of "forgot password" CSS by generalizing.
* Generalize the yellow banner on the main site.

issue #702

* Change the layout so that the entire form area gets the scroll bar for languages that use a lot of text or if the user has a lot of email addresses.
* Change the way the privacy policy and buttons are rendered so JS is not needed to set the width of the privacy policy.
* Put the TOS on its own line.
* Put "Always sign in using this email" on its own line
* Change the order of the "Forgot your password?" button and "password" label so that Germanic languages render the entire thing on one line.
* Remove the "Sign in using" header text.

issue #1300
issue #1286
issue #1275
issue #1274
issue #1272
issue #1262
issue #1261

close #918

* Took some code from the signup page.
* Moved the "open primary auth" window to page_helpers.
* cleanup of authenticate.js and page.js.
* convert signin to be based on a Module.

* Replace all the input[type=submit] with buttons so that we can set the line-height.
* Use common CSS between all buttons.

close #658

* Starting to unify the error code between the main site and the dialog.
* Trying to figure out how to share templates.
* Adding loads more unit tests to main site.

issue #542

close #519

* stricter checks on email format - limit local, domain, and total lengths
* set maxlength of email fields in HTML

close #513

close #464

No longer depend on id's, class names work better for this case and reduce the JS logic.

issue #510

Add a noscript tag to signin and signup stating to use these features, Javascript must be enabled.

issue #510

Starting on error messages for sign in page.

issue #364