qrp_report

Pull request #281: DEV-28374: Added footnotes for mothers and infants covariates

Merge in AD/qrp_report from DEV-28374 to staging

* commit '5de82b0258336973b6e523421067a91a40c97d6b':
  DEV-28374: Converted numeric variables to character to avoid conversion note
  DEV-28374: Fixed lab characteristic superscript issue
  DEV-28374: Created temporary dataset when dynamic superscripts are required
  DEV-28374: Fixed dp stratification issue
  DEV-28374: Added superscripts for mothers and infants covariates
  DEV-28374: Replaced covariate value with N/A in non-pregnant cohort for covariates only evaluated in infant
  DEV-28374: Added logic to determine codepop for cc covariates
  DEV-28374: Added new footnotes to lookup file