Add ability to remove devices

templates/delete.gohtml

@@ -0,0 +1,9 @@
+{{- /*gotype: pcinv.DeleteVM*/ -}}
+{{define "delete"}}
+{{template "header" "Delete Device"}}
+	<h2>Are you sure you want to delete this device?</h2>
+	<form id="confirmForm" method="post" action="/delete?id={{.Qr}}"></form>
+	<a href="/device?id={{.Qr}}"><button><b>No</b></button></a>
+	<button form="confirmForm">Yes</button>
+{{template "footer"}}
+{{end}}