Add initial/basic support for "simple" mobile grid filter w/ radio buttons

so far only one such filter is (presumably?) supported..etc.

tailbone/templates/mobile/filters_simple.mako

@@ -0,0 +1,16 @@
+## -*- coding: utf-8; -*-
+<div class="simple-filter">
+  ${h.form(request.current_route_url(), method='get')}
+  ${h.csrf_token(request)}
+
+  % for filtr in grid.iter_filters():
+      ${h.hidden('{}.verb'.format(filtr.key), value=filtr.verb)}
+      <fieldset data-role="controlgroup" data-type="horizontal">
+        % for value, label in filtr.iter_choices():
+            ${h.radio(filtr.key, value=value, label=label, checked=value == filtr.value)}
+        % endfor
+      </fieldset>
+  % endfor
+
+  ${h.end_form()}
+</div><!-- simple-filter -->

tailbone/templates/mobile/master/index.mako

@@ -9,6 +9,10 @@
 
 <%def name="title()">${model_title_plural}</%def>
 
+% if grid.filterable:
+    ${grid.render_filters()|n}
+% endif
+
 <ul data-role="listview">
   % for obj in grid.iter_rows():
       <li>${grid.listitem.render_readonly()}</li>

tailbone/templates/mobile/receiving/index.mako

@@ -7,12 +7,4 @@
     ${h.link_to("New Receiving Batch", url('mobile.receiving.create'), class_='ui-btn ui-corner-all')}
 % endif
 
-<fieldset data-role="controlgroup" data-type="horizontal">
-  ${h.radio('receiving-filter', value='pending', label="Pending", checked=True)}
-  ${h.radio('receiving-filter', value='complete', label="Complete", disabled='disabled')}
-  ${h.radio('receiving-filter', value='executed', label="Executed", disabled='disabled')}
-  ${h.radio('receiving-filter', value='all', label="All", disabled='disabled')}
-</fieldset>
-<br /><br />
-
 ${parent.body()}