• Implement Global Keystore, admin can now set up a server wide trust of public keys
  https://github.com/Zimbra-Community/pgp-zimlet/wiki/Global-Keystore
• Hide UI elements in case we don't put anything in them. (do not show white space on non-default ZCS themes)
• Code clean-up
• Signed messages are displayed with native Zimbra, no need to interfere (urlify will work as with normal email)