Sortable knowledge screen

Signed-off-by: nppangband <nppangbanddev@verizon.net>
Sortable kill count screen

Signed-off-by: nppangband <nppangbanddev@verizon.net>
Addd roman numerals to characters copied from previous

Signed-off-by: nppangband <nppangbanddev@verizon.net>
Add monster knowledge (buggy)

Signed-off-by: nppangband <nppangbanddev@verizon.net>
Knowledge screen bugfixes.

Signed-off-by: nppangband <nppangbanddev@verizon.net>