In cronRefreshGrades.sh, ensured that temp .tsv file contains a header row. Finished last touches for switching script to using local copies of edxprod databases.
In cronRefreshGrades.sh, ensured that temp .tsv file contains a header row. Finished last touches for switching script to using local copies of edxprod databases.

paepcke/json_to_relation,paepcke/json_to_relation,paepcke/json_to_relation,paepcke/json_to_relation