Fix Bug 1049964 - Buttons on Email addresses page

- Re-wrote the HTML output for this page to not use radio buttons.
- Fixed error in javascript asking for confirmation before removing an email address.
- Added a maximum line length to all templates in /users/templates/account.
- Fixed indentation on all templates in /users/templates/account.

Things to test:
- Can you add an email address?
- Can you remove an email address? Do you get prompted if you try to?
- Can you change your primary address? To a confirmed address?
- Can you resend a confirmation for an unconfirmed address?
- Are you prevented from resending a confirmation for a confirmed address?
- Are you prevented from making an unconfirmed address primary?
- Does content wrap at about 60 characters? Even if screen is wider than that.
- Does it not force the window too big on mobile?