Merge pull request #735 from AvadootNachankar/mongokit

MIS collection values' updates and minor bug fixes
To resolve an error, 'cls=NodeJsonEncoder' added in function call to json.dumps() within create_or_replace_json_file() of HistoryManager class.
blocktrans syntax updated.
MIS updated template & script to set-up default GAPPS for college group(s).