Make comment submission a separate process from comment display
Param fixes
Docblock correction
Move comment rendering to a separate function
Doc update for badgeos_check_if_user_has_submission()
Doc update for badgeos_check_if_user_has_nomination()
Introduces badgeos_check_if_user_has_feedback() as parent function for badgeos_check_if_user_has_submission() and badgeos_check_if_user_has_nomination()