2cf7023b37
In addition to storing ETag-hash tuples in the synchronization database, also store the URI of each object. This makes the synchronization process a bit more robust as we do not need to depend on ETags being globally unique. It also allows us to detect conflicts which occur when an object is modified locally and on the server at the same time. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>