initial version of the query autocompletion

Missing features at this point:
1. No suggestions when the input gets the focus.
2. Suggestions are not shown after selecting a suggestion.

pdb-js/src/app/query-autocomplete/query-autocomplete.component.spec.ts

@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { QueryAutocompleteComponent } from './query-autocomplete.component';
+
+describe('QueryAutocompleteComponent', () => {
+  let component: QueryAutocompleteComponent;
+  let fixture: ComponentFixture<QueryAutocompleteComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ QueryAutocompleteComponent ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(QueryAutocompleteComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});