[ACA-1443] prettier formatting and checks (#629)

* intergrate prettier

* update settings

* integrate with travis

* unified formatting across all files

src/app/components/context-menu/context-menu-outside-event.directive.ts

@@ -1,28 +1,34 @@
-import { Directive, Output, EventEmitter, OnInit, OnDestroy } from '@angular/core';
+import {
+  Directive,
+  Output,
+  EventEmitter,
+  OnInit,
+  OnDestroy
+} from '@angular/core';
 import { fromEvent, Subscription } from 'rxjs';
 import { delay } from 'rxjs/operators';
 
 @Directive({
   selector: '[acaContextMenuOutsideEvent]'
 })
-
 export class OutsideEventDirective implements OnInit, OnDestroy {
-    private subscriptions: Subscription[] = [];
+  private subscriptions: Subscription[] = [];
 
-    @Output() clickOutside: EventEmitter<null> = new EventEmitter();
+  @Output()
+  clickOutside: EventEmitter<null> = new EventEmitter();
 
-    constructor() {}
+  constructor() {}
 
-    ngOnInit() {
-        this.subscriptions = this.subscriptions.concat([
-            fromEvent(document.body, 'click')
-                .pipe(delay(1))
-                .subscribe(() => this.clickOutside.next())
-        ]);
-    }
+  ngOnInit() {
+    this.subscriptions = this.subscriptions.concat([
+      fromEvent(document.body, 'click')
+        .pipe(delay(1))
+        .subscribe(() => this.clickOutside.next())
+    ]);
+  }
 
-    ngOnDestroy() {
-        this.subscriptions.forEach(subscription => subscription.unsubscribe());
-        this.subscriptions = [];
-    }
+  ngOnDestroy() {
+    this.subscriptions.forEach(subscription => subscription.unsubscribe());
+    this.subscriptions = [];
+  }
 }