Find out how conflicting changes are handled

[derhofbauer]

When downloading files we can not just use timestamps because it is possible that changes have been made on the server and locally on the same revision, one of those changes would be lost when downloading based on edit timestamp!

Maybe we need to store the revision of a file when downloading it and change our local indexing behaviour by merging a created index with a stored index. That way we can fetch metadata like revision and compare hashes while keeping and storing an up-to-date index of our storage folder.