Add total followers on dossier list and followers list on dossier page for gestionnaire

app/facades/dossier_facades.rb

@@ -49,4 +49,8 @@ class DossierFacades
   def commentaires_files
     PieceJustificative.where(dossier_id: @dossier.id, type_de_piece_justificative_id: nil)
   end
+
+  def followers
+    Gestionnaire.joins(:follows).where("follows.dossier_id=#{@dossier.id}")
+  end
 end