added project detail report (#2651)

- avatars via css only
- random colors for entities
- improves print view
- added colors for teams
- added color to tag

src/Entity/Team.php

@@ -129,6 +129,8 @@ class Team
      */
     private $activities;
 
+    use ColorTrait;
+
     public function __construct()
     {
         $this->users = new ArrayCollection();