Fix warnings from jshint. Mimify. It fixes icat/doi-landing-page#63.

2 jobs for issue63
latest
Status Name Job ID Coverage
  Build
failed build #22113

 
  Deploy
skipped deploy_production #22114
allowed to fail manual
 
Name Stage Failure
failed
build Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log