Malformed socialcalc fixes   * Interpret column A1 as tok if header is missing   * Fix invalid Coptic Scriptorium layer names   * Fix invisible nested spans when a merged span contains smaller merged spans
Malformed socialcalc fixes
  * Interpret column A1 as tok if header is missing
  * Fix invalid Coptic Scriptorium layer names
  * Fix invisible nested spans when a merged span contains smaller merged spans

cligu/gitdox,cligu/gitdox,cligu/gitdox,cligu/gitdox