Add caching to sectionTemplate helper.
Add caching to sectionTemplate helper.

Reading (or attempting to read) the template from disk multiple times is super
inefficient, so we are going to cache the compiled template.

alexrchies/kss-node,aeharding/kss-node,wyunib/kss-node,sarahjean/kss-node,RobLoach/kss-node,aeharding/kss-node,alexrchies/kss-node,fabriziogiordano/kss-node,chloeleichen/kss-node,sarahjean/kss-node,aeharding/kss-node,sarahjean/kss-node,wyunib/kss-node,RobLoach/kss-node,chloeleichen/kss-node,wyunib/kss-node,RobLoach/kss-node,alexrchies/kss-node,fabriziogiordano/kss-node,chloeleichen/kss-node,fabriziogiordano/kss-node