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/Models/Forms/Form.php

@@ -83,7 +83,10 @@ class Form extends Model
 
         // Security & Privacy
         'can_be_indexed',
-        'password'
+        'password',
+
+        // Custom SEO
+        'seo_meta'
     ];
 
     protected $casts = [
@@ -91,7 +94,8 @@ class Form extends Model
         'database_fields_update' => 'array',
         'closes_at' => 'datetime',
         'tags' => 'array',
-        'removed_properties' => 'array'
+        'removed_properties' => 'array',
+        'seo_meta' => 'object'
     ];
 
     protected $appends = [