Merge pull request #2125 from Mark-de-Haan/master

Fix failing mysql count test
Created a javascript file containing handlebar helper functions to prevent duplication of code
imported handlebar helper block script into data explorer
Replaced generating annotators boxes in js with a handlebar template
Implemented handlebar in annotator js
Added handlebar helper block script to standardsregistry
Moved handlebar helper blocks to separate script
Merge branch 'master' of github.com:molgenis/molgenis