Change authors format from LN, FN to FN LN
Request: https://www.mobileread.com/forums/showpost.php?p=4187691&postcount=26 author_sort can be a string of authors, see https://www.mobileread.com/forums/showthread.php?p=4188009
Request: https://www.mobileread.com/forums/showpost.php?p=4187691&postcount=26 author_sort can be a string of authors, see https://www.mobileread.com/forums/showthread.php?p=4188009