WebSearch: fix for empty collection on frontpage
WebSearch: fix for empty collection on frontpage

 * Frontpage template throws and error on a clean Invenio
   installation due to an empty colleciton record list.

tiborsimko/invenio-search,inveniosoftware/invenio-records,tiborsimko/invenio-records,inveniosoftware/invenio-records,inveniosoftware/invenio-search,inveniosoftware/invenio-search,tiborsimko/invenio-search,tiborsimko/invenio-records