GitRepository: mini change + added TODO comment

Signed-off-by: Jan Pecha <janpecha@email.cz>
GitRepository: added GIT commands into PhpDoc comments

Signed-off-by: Jan Pecha <janpecha@email.cz>
Fixed IGit interface

Signed-off-by: Jan Pecha <janpecha@email.cz>
IGit: removed unnecessary public keyword

Signed-off-by: Jan Pecha <janpecha@email.cz>