break 'checkParams' feature out into a separate file so it can be shared by multiple processes - issue #460

* user->requestPasswordReset now verifies user exists, handles throttling.
* add unit tests for the forgot page.
* do home grown form validation on the email.
* Print appropriate error messages and tooltips.

close #515

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

close #513

close #464

close #512

* channel.js - if relay is not found, throw an exception.
* dialog_controller.js - check for errors when establishing relay. Display message if appropriate.

close #465

* channel.js - if relay is not found, throw an exception.
* dialog_controller.js - check for errors when establishing relay. Display message if appropriate.

close #475

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

issue #510

* Makes it easier for the user whenever they go from sign up to sign in to forgot password and back.
* Stop remembering the username when the user successfully completes an action
* Put some code into /js/pageHelpers.js to keep /js/browserid.js clean.
* Start tests for pageHelpers.js.

close #476

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

issue #510

Min length of 2.5 seconds.  The rest is based on a user reading ±200wpm, when the real average reading speed is ~250wpm.

close #508

close #430

bump to postprocess 0.0.3 - fixes issues in postprocessing certain types of responses (where a string is sent() instead of a buffer as the first chunk)

implement throttling on outbound emails: don't send emails to the same address more than once per minute - issue #430

* Adding a form_section div for styling.
* Modify for form_section styles to be applied everywhere except mobile.

close #502

close #494

* Cleaning up the messages
* Adding expanded info
* Adding network response codes and jQuery error message
* Styling
* Adding tests for expected behaviors

close #448

Showing the network request and the user action that triggered the error.

issue #448