Cleaned up a load of relations and optional stuff

ref #11

src/models/entities/UserAction.ts

@@ -1,10 +1,10 @@
-import { PrimaryGeneratedColumn, Column, OneToMany, Entity, ManyToOne } from "typeorm";
 import {
   IsInt,
   IsNotEmpty,
   IsOptional,
-  IsString,
+  IsString
 } from "class-validator";
+import { Column, Entity, ManyToOne, PrimaryGeneratedColumn } from "typeorm";
 import { User } from './User';
 
 /**
@@ -16,7 +16,6 @@ export class UserAction {
    * Autogenerated unique id (primary key).
    */
   @PrimaryGeneratedColumn()
-  @IsOptional()
   @IsInt()
   id: number;