Add jump buttons to view product, vendor in CORE Office

hopefully can use the same pattern for anything else that comes up

tailbone_corepos/templates/vendors/view.mako

@@ -0,0 +1,11 @@
+## -*- coding: utf-8; -*-
+<%inherit file="/master/view.mako" />
+<%namespace file="/corepos-util.mako" import="render_xref_helper" />
+
+<%def name="object_helpers()">
+  ${parent.object_helpers()}
+  ${render_xref_helper()}
+</%def>
+
+
+${parent.body()}