Correct whitespace in .gitconfig

Signed-off-by: Tim Ekl <lithium3141@gmail.com>
Specify that git-mergetool should keep backups

Signed-off-by: Tim Ekl <lithium3141@gmail.com>
Enable git command-line autocorrection

Signed-off-by: Tim Ekl <lithium3141@gmail.com>
Prevent less from exiting automatically at EOF

Signed-off-by: Tim Ekl <lithium3141@gmail.com>