Bug 1170926 - have the hamburger menu notice the 'needs reauthentication' state. r=adw

browser/base/content/browser-fxaccounts.js

@@ -31,6 +31,7 @@ let gFxAccounts = {
       "weave:service:sync:start",
       "weave:service:login:error",
       "weave:service:setup-complete",
+      "weave:ui:login:error",
       "fxa-migration:state-changed",
       this.FxAccountsCommon.ONVERIFIED_NOTIFICATION,
       this.FxAccountsCommon.ONLOGOUT_NOTIFICATION,