RED-I is not inserting logged errors into final report

[nrejac]

Examine the error trapping code in redi/upload.py, specifically handle_errors_in_redcap_xml_response. Errors that appear in the RED-I log are not being inserted into the final report emailed out by RED-I. This includes REDCap data validation errors. This issue may be related to changes in the text format of errors reported by REDCap between versions of REDCap.