Do not make the backing fields of author name and line data lower case

Fix regression of 6f1a986e7339428db588c1388ecc512b7b2d1c1d

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Do not toggle "Ignore whitespace" when "Detect moved or copied lines" options are changed

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>