Replace env() usage within app (#735)

env() will always return the default value when used outside of config
files if the config has been cached

api/app/Models/Forms/Form.php

@@ -179,7 +179,7 @@ class Form extends Model implements CachableAttributes
     public function getViewsCountAttribute()
     {
         return $this->remember('views_count', 15 * 60, function (): int {
-            if (env('DB_CONNECTION') == 'mysql') {
+            if (config('database.default') === 'mysql') {
                 return (int) ($this->views()->count() +
                     $this->statistics()->sum(DB::raw("json_extract(data, '$.views')")));
             }