make sure that we keep the correct timestamp and etag after encryoption/decryption
only update file cache if the file is already indexed to avoid that we create a incomplete file cache entry
fixPartialFilePath() is now stripPartialFileExtension()
Merge branch 'master' into encryption_fixes
test encryptAll() and decryptAll() to make sure that mtime and etag stay the same
remove debug output
Merge pull request #5833 from owncloud/encryption_fixes

[encryption] preserve timestamps and etags during encryption/decryption