FormatNumberToString() and FormatStringToNumber()

$FormatNumberToString()$ is deprecated in favor of $HMLFormatUtil.numberToString()$. The former has the same input parameters and return type as the latter (see numberToString()).

$FormatStringToNumber()$ is deprecated in favor of $HMLFormatUtil.stringToNumber()$. The former has the same input parameters and return type as the latter (see stringToNumber()).