Skip printing categories widget in 404 template if there's only one category
Skip printing categories widget in 404 template if there's only one category

Addresses issue 183 - https://github.com/Automattic/_s/issues/183

jchck/jchck_,vaishaliagola27/_s,madeso-uk/vcsassist,vaishaliagola27/_s,madeso-uk/vcsassist,andbaz/launchbaz,carl-alberto/business-portfolio,SparkartGroupInc/nadando,vaishaliagola27/_s,jchck/jchck_,solidusjs/wp-solidus,carl-alberto/business-portfolio,andbaz/launchbaz