Added comments to the bugfix

src/models/entities/IAddressUser.ts

@@ -1,6 +1,10 @@
 import { Entity, ManyToOne, PrimaryColumn } from 'typeorm';
 import { Address } from './Address';
 
+/**
+ * The interface(-ish) all entities using addresses have to implement.
+ * This is a abstract class, because apparently typeorm can't really work with interfaces :/
+ */
 @Entity()
 export abstract class IAddressUser {
     @PrimaryColumn()