Adding tests for negated (empty list) tag, partials in loops not referencing parent values.
Adding tests for negated (empty list) tag, partials in loops not referencing parent values.

alex/pystache,jrnold/pystache,jrnold/pystache,harsh00008/pystache,dmfrancisco/django-pystache,clach04/pystache_old_v0.4.1,rismalrv/pystache,beni55/pystache,nitish116/pystache,defunkt/pystache,rismalrv/pystache,charbeljc/pystache,harsh00008/pystache,rismalrv/pystache,nitish116/pystache,nitish116/pystache,beni55/pystache,charbeljc/pystache,harsh00008/pystache,arlenesr28/pystache,arlenesr28/pystache,arlenesr28/pystache