Code + comment cleanup for the entities

ref #39

src/models/entities/Donor.ts

@@ -3,13 +3,13 @@ import { ChildEntity, Column } from "typeorm";
 import { Participant } from "./Participant";
 
 /**
- * Defines a donor.
+ * Defines the Donor entity.
 */
 @ChildEntity()
 export class Donor extends Participant {
   /**
-   * Does this donor need a receipt?.
-   * Default: false
+   * Does this donor need a receipt?
+   * Will later be used to automaticly generate donation receipts.
    */
   @Column()
   @IsBoolean()