Add initial versioning support with SQLAlchemy-Continuum.

tailbone/templates/roles/crud.mako

@@ -14,6 +14,9 @@
       <li>${h.link_to("View this Role", url('role.read', uuid=form.fieldset.model.uuid))}</li>
   % endif
   <li>${h.link_to("Delete this Role", url('role.delete', uuid=form.fieldset.model.uuid), class_='delete')}</li>
+  % if not form.creating and request.has_perm('role.versions.view'):
+      <li>${h.link_to("View Change History ({0})".format(version_count), url('role.versions', uuid=form.fieldset.model.uuid))}</li>
+  % endif
 </%def>
 
 ${parent.body()}

tailbone/templates/roles/versions/index.mako

@@ -0,0 +1,3 @@
+## -*- coding: utf-8 -*-
+<%inherit file="/versions/index.mako" />
+${parent.body()}

tailbone/templates/roles/versions/view.mako

@@ -0,0 +1,3 @@
+## -*- coding: utf-8 -*-
+<%inherit file="/versions/view.mako" />
+${parent.body()}