Cleaned up a load of relations and optional stuff

ref #11

src/models/entities/Track.ts

@@ -1,11 +1,11 @@
-import { Entity, PrimaryGeneratedColumn, Column, OneToMany } from "typeorm";
 import {
   IsInt,
   IsNotEmpty,
-  IsOptional,
+
   IsPositive,
-  IsString,
+  IsString
 } from "class-validator";
+import { Column, Entity, OneToMany, PrimaryGeneratedColumn } from "typeorm";
 import { ScanStation } from "./ScanStation";
 import { TrackScan } from "./TrackScan";
 
@@ -18,7 +18,6 @@ export class Track {
    * Autogenerated unique id (primary key).
    */
   @PrimaryGeneratedColumn()
-  @IsOptional()
   @IsInt()
   id: number;;