Git: Support remotes with whitespace on url

Task-number: QTCREATORBUG-9789

Change-Id: Id501ade0ac2ce7093fa38368f13b2bfab31bd35f
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Git: Initialize remote model directory even when no remotes found

Task-number: QTCREATORBUG-9789
Change-Id: If3626e244b9d85ad670d586438710e17bba8e927
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
QbsProjectManager: Support the "plain C" and "plain C++" wizards.

Change-Id: Idcc8459660526f972949a6f6908acc19bd52a4f7
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>