Add support for making new product on-the-fly during mobile ordering

let's face it, that will be necessary sometimes.  this feature still needs some
work before can be called complete though...

tailbone/templates/mobile/master/edit_row.mako

@@ -5,12 +5,14 @@
 
 <%def name="page_title()">${h.link_to(index_title, index_url)} &raquo; ${h.link_to(parent_title, parent_url)} &raquo; ${h.link_to(instance_title, instance_url)} &raquo; Edit</%def>
 
-<%def name="buttons()">
-  <br />
-  ${h.submit('create', form.update_label)}
-  <a href="${form.cancel_url}" class="ui-btn">Cancel</a>
-</%def>
+## TODO: this should not be necessary, correct?
+## <%def name="buttons()">
+##   <br />
+##   ${h.submit('create', form.update_label)}
+##   ${h.link_to("Cancel", form.cancel_url, class_='ui-btn ui-corner-all')}
+## </%def>
 
 <div class="form-wrapper">
-  ${form.render(buttons=capture(self.buttons))|n}
+##  ${form.render(buttons=capture(self.buttons))|n}
+  ${form.render()|n}
 </div><!-- form-wrapper -->

tailbone/templates/mobile/ordering/new_product.mako

@@ -0,0 +1,6 @@
+## -*- coding: utf-8; -*-
+<%inherit file="/mobile/master/create_row.mako" />
+
+<%def name="page_title()">${h.link_to(index_title, index_url)} &raquo; ${h.link_to(instance_title, instance_url)} &raquo; Add Item</%def>
+
+${parent.body()}