Enter new password 2 times when registering.

Thanks to sh2515 and xet7 !

Fixes #2378

config/accounts.js

@@ -24,7 +24,7 @@ AccountsTemplates.addFields([
 AccountsTemplates.configure({
   defaultLayout: 'userFormsLayout',
   defaultContentRegion: 'content',
-  confirmPassword: false,
+  confirmPassword: true,
   enablePasswordChange: true,
   sendVerificationEmail: true,
   showForgotPasswordLink: true,