add more keys into mc.keymap
fix: CK_SingleDirsizeCmd event
add default keys (alt-'.', alt-'+') mc.keymap
Signed-off-by: Ilia Maslakov <il.smind@google.com>
Added alt-shift-h hotkey
Add some documentation about keymap file.
Replace some symbols into names '.' to 'dot', '?' to question, etc.
Signed-off-by: Slava Zanko <slavazanko@gmail.com>