Basic popover tab components.

src/components/popover/tab/none-tab.component.ts

@@ -0,0 +1,21 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+    moduleId: module.id,
+    selector: 'none-tab',
+    template: `This key is unassigned and has no functionality.`,
+    styles:
+    [`
+        :host {
+            display: flex;
+            justify-content: center;
+            padding: 2rem 0;
+        }
+    `]
+})
+export class NoneTabComponent implements OnInit {
+    constructor() { }
+
+    ngOnInit() { }
+
+}