Removed old rules from eslint

Tried hand at testing by fixing the spec files with import. However, still many errors and given up now.

overlord/src/app/purchases/purchases-resolver.service.spec.ts

@@ -1,10 +1,12 @@
 import { inject, TestBed } from '@angular/core/testing';
+import { HttpClientModule } from '@angular/common/http';
 
 import { PurchasesResolver } from './purchases-resolver.service';
 
 describe('PurchasesResolver', () => {
   beforeEach(() => {
     TestBed.configureTestingModule({
+      imports: [HttpClientModule],
       providers: [PurchasesResolver],
     });
   });

overlord/src/app/purchases/purchases.component.spec.ts

@@ -1,4 +1,7 @@
 import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { MatDialogModule } from '@angular/material/dialog';
+import { ReactiveFormsModule } from '@angular/forms';
+import { RouterTestingModule } from '@angular/router/testing';
 
 import { PurchasesComponent } from './purchases.component';
 
@@ -8,6 +11,7 @@ describe('PurchasesComponent', () => {
 
   beforeEach(async(() => {
     TestBed.configureTestingModule({
+      imports: [MatDialogModule, ReactiveFormsModule, RouterTestingModule],
       declarations: [PurchasesComponent],
     }).compileComponents();
   }));

overlord/src/app/purchases/purchases.service.spec.ts

@@ -1,10 +1,12 @@
 import { inject, TestBed } from '@angular/core/testing';
+import { HttpClientModule } from '@angular/common/http';
 
 import { PurchasesService } from './purchases.service';
 
 describe('PurchasesService', () => {
   beforeEach(() => {
     TestBed.configureTestingModule({
+      imports: [HttpClientModule],
       providers: [PurchasesService],
     });
   });