update dependencies and fix unit tests

src/app/app.component.spec.ts

@@ -2,6 +2,7 @@ import { TestBed, async } from '@angular/core/testing';
 import { RouterTestingModule } from '@angular/router/testing';
 import { AppComponent } from './app.component';
 import { ElectronService } from 'app/providers/electron.service';
+import { TranslateModule } from '@ngx-translate/core';
 
 describe('AppComponent', () => {
   beforeEach(async(() => {
@@ -12,7 +13,10 @@ describe('AppComponent', () => {
       providers : [
         ElectronService
       ],
-      imports: [RouterTestingModule]
+      imports: [
+        RouterTestingModule,
+        TranslateModule.forRoot()
+      ]
     }).compileComponents();
   }));