Refactor tutorial and user models to replace fileName with id, update related components and services for consistency

jambotron-ui/src/app/modules/admin-module/users.component/users.component.ts

@@ -85,7 +85,7 @@ export class UsersComponent {
   }
 
    saveUserRoles(user:User){
-    this.adminService.updateUserRoles(user.fileName, user).subscribe(
+    this.adminService.updateUserRoles(user.id, user).subscribe(
       (data:any) => {
         console.log(data);
         user.isEdit = false
@@ -98,13 +98,13 @@ export class UsersComponent {
 
   isChecked(element: User, role: Role) {
     let userRoles: Role[] = element.roles;
-    return element.roles.some((r:Role) => r.fileName === role.fileName);
+    return element.roles.some((r:Role) => r.id === role.id);
   }
 
   onValChange(element:User, role: Role) {
     let userRoles: Role[] = element.roles;
     if (this.isChecked(element, role)) {
-      userRoles = userRoles.filter((r:Role) => r.fileName !== role.fileName);
+      userRoles = userRoles.filter((r:Role) => r.id !== role.id);
     }else {
       userRoles.push(role);
     }