issue #265

some updates to the dialog from a couple of days ago

Conflicts:
	browserid/static/include.js

Fixes a problem when selecting an email, an email was not passed.

Since the relay is only two files, right now in compress.sh concatinating just those two files.

Getting the host from the channel's origin.  The dialog registers itself with the relay frame, which calls a callback in the dialog that states what the origin is.

issue #251.

If a BrowserID dialog is already open for a tab when the user clicks on "Sign In", re-focus the original dialog.  This ensures that only one iframe is opened as well.

Fixes #242 and #243.

Fixes a problem when selecting an email, an email was not passed.

Setting up Vagrant for BrowserID