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

app/Http/Requests/UserFormRequest.php

@@ -121,6 +121,9 @@ abstract class UserFormRequest extends \Illuminate\Foundation\Http\FormRequest
             // Security & Privacy
             'can_be_indexed' => 'boolean',
             'password' => 'sometimes|nullable',
+
+            // Custom SEO
+            'seo_meta' => 'nullable|array'
         ];
     }