Fixed issue #2257: Fetching & pushing using ssh.exe not working with TortoiseGit 1.8.10

This commit fixes a regression introduced in commit 31ee06f132116bbbdbf5576b571fbf3ffdca7c9e.

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Fix typo

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Fix typo

Signed-off-by: Yue Lin Ho <b8732003@student.nsysu.edu.tw>
Signed-off-by: Sven Strickroth <email@cs-ware.de>
libgit2 password box: If username is filled, focus password text field

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