Miscellaneous updates

A number of miscellaneous updates have gone out in the last week. All these issues should now be fixed

• Certain emails generated by Exchange servers with embedded images
  weren’t being displayed properly (just a grey box instead of the
  picture)
• Messages signed with the SMIME standard would appear as empty. Most
  of these should now display at least partially correctly
• When adding a new alias, a corresponding default personality is also
  creates that will allow you to send email with a From address of
  that alias
• When renaming an account, custom fields from the address book were
  not being moved to the new account
• Aliases and Virtual Domain/Virtual Aliases have now been put on
  separate screens to keep their separate functionality together.
  Alias targets can also be edited rather than having to delete and
  re-enter an alias