Cleanup Reports

Cleaned up code

userhistory report - date formatting failed
userhistory - display username not userfullname - userfullname is not required
Fix dataentry daybook - Batch ID instead of <Batch at XXX>
Fix Hidden (AnalysisQC report and QC reports template)
Flag __ac_* and form.submitted fields as 'used'

prevents jsonapi read/update failing when __ac token is in the request