DEV: Move pro support url to setting

config/locales/server.en.yml

@@ -55,3 +55,4 @@ en:
     wizard_redirect_exclude_paths: "Routes excluded from wizard redirects."
     wizard_recognised_image_upload_formats: "File types which will result in upload displaying an image preview"
     wizard_apis_enabled: "Enable API features (experimental)."
+    wizard_pro_support_url: "URL Linking to Pavilion's PRO Support"

config/settings.yml

@@ -18,3 +18,7 @@ plugins:
   wizard_apis_enabled:
     client: true
     default: false
+  wizard_pro_support_url:
+    client: true
+    default: ''
+    type: string