Fix: Bring back to life the error message for wallet already in use

js/controllers/signin.js

@@ -83,7 +83,7 @@ angular.module('copay.signin').controller('SigninController',
     };
 
     function installStartupHandlers(wallet) {
-      wallet.network.on('error', function(err) {
+      wallet.on('connectionError', function(err) {
         $scope.failure = true;
       });
       wallet.on('ready', function() {

js/models/core/Wallet.js

@@ -222,6 +222,9 @@ Wallet.prototype.netStart = function() {
     self.log('[Wallet.js.132:openError:] GOT  openError'); //TODO
     self.emit('openError');
   });
+  net.on('error', function(){
+    self.emit('connectionError'); // Bubble the error
+  });
   net.on('close', function() {
     self.emit('close');
   });