Show github ribbon only in web build

Closes #264

electron/src/main-app/main-app.component.html

@@ -0,0 +1,6 @@
+<notification></notification>
+<side-menu></side-menu>
+<div id="main-content" class="split split-horizontal main-content">
+    <router-outlet></router-outlet>
+</div>
+<ngrx-store-log-monitor toggleCommand="alt-t"></ngrx-store-log-monitor>

electron/src/main-app/main-app.component.ts

@@ -11,7 +11,7 @@ import { UhkDeviceService } from '../services/uhk-device.service';
 
 @Component({
     selector: 'main-app',
-    templateUrl: '../shared/main-app/main-app.component.html',
+    templateUrl: './main-app.component.html',
     styleUrls: ['../shared/main-app/main-app.component.scss'],
     encapsulation: ViewEncapsulation.None
 })