Add back button, rename functions

Breeze.UI/src/app/setup/setup.component.html

@@ -5,5 +5,6 @@
 <p>
   Users who have previously used Breeze, can choose to recover their wallet.
 </p>
-<button (click)="createWallet()">Create</button>
-<button (click)="recoverWallet()">Recover</button>
+<button (click)="onCreateClicked()">Create</button>
+<button (click)="onRecoverClicked()">Recover</button>
\ No newline at end of file
+<button (click)="onBackClicked()">Back</button>

Breeze.UI/src/app/setup/setup.component.ts

 import { Component } from '@angular/core';
+import {Location} from '@angular/common';
 import { Router } from '@angular/router';
 
 @Component({
@@ -7,12 +8,16 @@ import { Router } from '@angular/router';
   styleUrls: ['./setup.component.css'],
 })
 export class SetupComponent {
-  constructor(private router: Router) {}
-  private createWallet() {
-    this.router.navigate(['/setup/create'])
+  constructor(private router: Router, private location: Location) {}
+  private onCreateClicked() {
+    this.router.navigate(['/setup/create']);
   }
 
-  private recoverWallet() {
-    this.router.navigate(['/setup/recover'])
+  private onRecoverClicked() {
+    this.router.navigate(['/setup/recover']);
+  }
+
+  private onBackClicked() {
+    this.location.back();
   }
 }