add funtionala tests
add support for partial in template
template finder will only be available if its defined (older versions of chef doesnt have it)
include chefcontext module in Erubis context only when templatefinder is not nil
dont run template partial tests where templatefinder is not available
allow ree with chef 11 failure
fix typo
Merge pull request #135 from ranjib/partials_in_template

Partials in template