tpl: Must do a extra lookup of cloned base templates
tpl: Must do a extra lookup of cloned base templates

See #2549
Fixes #3013

anthonyfok/hugo,digitalcraftsman/hugo,mdhender/hugo,fedelibre/hugo,digitalcraftsman/hugo,mdhender/hugo,mdhender/hugo,anthonyfok/hugo,anthonyfok/hugo,gohugoio/hugo,gohugoio/hugo,mitchchn/hugo,fedelibre/hugo,gohugoio/hugo,mitchchn/hugo,fedelibre/hugo,mdhender/hugo,fedelibre/hugo