Changed user profile so that it updates the username field when email is changed. And added language on the page to alert user that they'll need to reset their password.
Merge branch 'eschol_prod' into mh_usernameChange_feb11
Repaired email editing on 'Edit Reviewer Profile' form, and also updates username.
Fixed bug in edit reviewer form when validation fails. Added email changing.
Added code to call to Subi when user changes their email, to trigger a password reset email.
Avoiding need for lib_curl on production.
Record old email when user changes their email.
Remove @ in order to display syntax error messages.
Merge branch 'eschol_prod' into bhui-add-help-links