Use a modal to set the unlock pin (#1064)

* Use separate modal to set pin

* Remove incorrect label

* Fix tab focus for settings and set-pin modals

* Remove leftover code

* Update jslib

src/app/components/set-pin.component.ts

@@ -0,0 +1,8 @@
+import { Component } from '@angular/core';
+
+import { SetPinComponent as BaseSetPinComponent } from 'jslib-angular/components/set-pin.component';
+
+@Component({
+    templateUrl: 'set-pin.component.html',
+})
+export class SetPinComponent extends BaseSetPinComponent { }