I'm following the downloaded JA Company instructions to install ja-company.zip to my website admin back-end, so that I can asses it as a possible new template. That zip file, downloaded from the JA Company template page on the Joomlart website, is 254MB, which feels big to me for a template file. However, within that zip file is a further zip file also named ja-company.zip, and just 38MB. Which one should be installed?