Account confirmation links aren't shown in terminal if TESTING=True

[alisonrclarke]

I made changes in c6cd938 to cut HTML tags out of emails when displaying on the console, to make them easier to read. Unfortunately this means URLs of links aren't displayed, so for example when creating a new user in TESTING mode, the confirmation link can't be seen.

We should modify the regular expressions to act differently on <a> tags, or find a better way of filtering out HTML tags, e.g. using bleach which is already installed for use in sanitising HTML in records.