Description of problem:
  The email generated when changing email address is sent to the old email, and the activation link has no activation key (causing a 404).

Version-Release number of selected component (if applicable):
  3.4.0-SNAPSHOT (git-server-3.3.2-351-gdebfc4e) 

How reproducible:
Unknown

Steps to Reproduce:
1. Log in (I used Kerberos)
2. Visit Account Settings from the Dashboard
3. Submit a new email address
4. Log out

Actual results:
  Old email address receives an email with invalid activation link: https://zanata.example.com/account/validate_email/ 

Expected results:
  New email address receives an email with a working activation link, ie https://zanata.example.com/account/validate_email/${activationKey}

Additional info:

The 404 is because the key is missing.  If you add in a dummy key at the end of the URL, you get this message: "Invalid activation key But you can help us fix it!"

Regarding email activation, see also https://bugzilla.redhat.com/show_bug.cgi?id=1098863