Release 2.0.33 (#4273)

* added function to check if meta-field is defined by a plugin
* hide un-defined meta-fields in details view
* fix default charset = utf8mb4
* remove broken DATABASE_VERSION fallback
* split off upgrade infos for version 1.x
* fix page out of range #4279

src/Entity/MetaTableTypeTrait.php

@@ -255,4 +255,12 @@ trait MetaTableTypeTrait
             $this->id = null;
         }
     }
+
+    /**
+     * Whether this field is defined by a plugin or just a value stored in the database.
+     */
+    public function isDefined(): bool
+    {
+        return $this->type !== null;
+    }
 }