Fix getCommonDir function.

getCommonDir function returned wrong dir on some cases.

Signed-off-by: Boris Barbulovski <bbarbulovski@gmail.com>
Rename QSvnCommitItemsModel variable member.

Rename QSvnCommitItemsModel::m_seleted to
QSvnCommitItemsModel::m_checked.

Signed-off-by: Boris Barbulovski <bbarbulovski@gmail.com>
Enable commit dialog keeplocks checkbox.

Signed-off-by: Boris Barbulovski <bbarbulovski@gmail.com>