Add basic support for "mobile edit" of records

specifically need to allow this for Customer records, for one app

tailbone/templates/mobile/master/view.mako

@@ -42,3 +42,7 @@ ${form.render()|n}
     <br />
     ${grid.render_complete()|n}
 % endif
+
+% if master.mobile_editable and instance_editable and request.has_perm('{}.edit'.format(permission_prefix)):
+    ${h.link_to("Edit This", url('mobile.{}.edit'.format(route_prefix), uuid=instance.uuid), class_='ui-btn ui-corner-all')}
+% endif