Qbs: correct dependencies (even though they are currently not used)

Change-Id: I6f9a6e1e504885f4e69189eb0982e4e04014b1b1
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
fix duplicates in file lists of qbs project files

Change-Id: Ib38dc0a01390f8eeaa289e2626ed214274e28f73
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>