Mitigated circular dependency (to be fixed)

ref #65

src/models/entities/Donation.ts

@@ -3,7 +3,7 @@ import {
   IsNotEmpty
 } from "class-validator";
 import { Entity, ManyToOne, PrimaryGeneratedColumn, TableInheritance } from "typeorm";
-import { Participant } from "./Participant";
+import { Donor } from './Donor';
 
 /**
  * Defines the Donation entity.
@@ -24,8 +24,8 @@ export abstract class Donation {
    * The donations's donor.
    */
   @IsNotEmpty()
-  @ManyToOne(() => Participant, donor => donor.donations)
-  donor: Participant;
+  @ManyToOne(() => Donor, donor => donor.donations)
+  donor: Donor;
 
   /**
    * The donation's amount in cents (or whatever your currency's smallest unit is.).