Merge pull request #19 from Cito/develop

Various smaller fixes and cleanups.
templates/datagrid.jinja: jinja2 does not defines enumerate function. Replaced enumerate iteration index with loop.index0 variable
resolve webob version conflict on python 2.5
Merge pull request #20 from simock85/develop

templates/datagrid.jinja: jinja2 does not define enumerate function.
Remove specfile.
Fix up tests with valid xhtml.
Python3 support.
fix concurrent modification of buttons in forms
Merge branch 'feature/2.2' into develop
Add dep on six.