Updated to use null defaults for givenName, surname

Author: Robert

lib/config.yml

@@ -67,7 +67,7 @@ web:
           enabled: true
           label: "First Name"
           placeholder: "First Name"
-          required: false
+          required: null
           type: "text"
         middleName:
           enabled: false
@@ -79,7 +79,7 @@ web:
           enabled: true
           label: "Last Name"
           placeholder: "Last Name"
-          required: false
+          required: null
           type: "text"
         username:
           enabled: false

test/controllers/test-register.js

@@ -70,14 +70,14 @@ DefaultRegistrationFixture.prototype.defaultJsonViewModel = {
         'label': 'First Name',
         'name': 'givenName',
         'placeholder': 'First Name',
-        'required': true,
+        'required': null,
         'type': 'text'
       },
       {
         'label': 'Last Name',
         'name': 'surname',
         'placeholder': 'Last Name',
-        'required': true,
+        'required': null,
         'type': 'text'
       },
       {