Add addressee history to ticket serialization

This update extends the tickets serialization and normalisation process to include addressee history. With the changes, AddresseeHistory class now also keeps track of who removed an addressee. Additional types, tests and interfaces have been introduced to support this change.

src/Bundle/ChillMainBundle/Resources/public/types.ts

@@ -51,6 +51,8 @@ export interface UserGroup {
     excludeKey: string,
 }
 
+export type UserGroupOrUser = User | UserGroup;
+
 export interface UserAssociatedInterface {
   type: "user";
   id: number;