improve banners render : context person, with common improvements on accompanyingcourse and household context

src/Bundle/ChillPersonBundle/Entity/Person.php

@@ -102,7 +102,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
      *
      * @ORM\Column(type="date", nullable=true)
      */
-    private $birthdate; //to change in birthdate
+    private $birthdate; 
 
     /**
      * The person's deathdate
@@ -733,6 +733,11 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
     {
         return $this->birthdate;
     }
+    
+    public function getAge(): int 
+    {
+        return date_diff($this->birthdate, date_create('now'))->format("%y");
+    }
 
     /**
      * Set placeOfBirth