Custom SEO (#154)

* Enable Pro plan - WIP

* no pricing page if have no paid plans

* Set pricing ids in env

* views & submissions FREE for all

* extra param for env

* form password FREE for all

* Custom Code is PRO feature

* Replace codeinput prism with codemirror

* Better form Cleaning message

* Added risky user email spam protection

* fix form cleaning

* Custom SEO

* fix custom seo formcleaner

* remvoe fix condition

database/factories/FormFactory.php

@@ -85,7 +85,8 @@ class FormFactory extends Factory
             'tags' => [],
             'slack_webhook_url' => null,
             'editable_submissions_button_text' => 'Edit submission',
-            'confetti_on_submission' => false
+            'confetti_on_submission' => false,
+            'seo_meta' => [],
         ];
     }