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/corepos-util.mako

@@ -0,0 +1,18 @@
+## -*- coding: utf-8; -*-
+
+<%def name="render_xref_helper()">
+  <div class="object-helper">
+    <h3>Cross-Reference</h3>
+    <div class="object-helper-content">
+      <b-button type="is-primary"
+                % if core_office_url:
+                tag="a" href="${core_office_url}" target="_blank"
+                % else:
+                disabled title="${core_office_why_no_url}"
+                % endif
+                >
+        View in CORE Office
+      </b-button>
+    </div>
+  </div>
+</%def>

tailbone_corepos/templates/products/view.mako

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

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()}