fix(usernames): various

Partial fixage for autocomplete @ing
Don't add username to chat message if user is unverified
Fix flying pets
Fix console error about avatar intro

website/server/models/message.js

@@ -118,7 +118,7 @@ export function messageDefaults (msg, user) {
       contributor: user.contributor && user.contributor.toObject(),
       backer: user.backer && user.backer.toObject(),
       user: user.profile.name,
-      username: user.auth && user.auth.local && user.auth.local.username,
+      username: user.flags.verifiedUsername && user.auth && user.auth.local && user.auth.local.username,
     });
   } else {
     message.uuid = 'system';