Local updates don't sync immediately

[KevinMackenzie]

Since the local updates are synced on the same timer as the remote ones, they don't sync immediately, but that is critical to smooth performance. Since the local file state is always in flux, we want to make sure that our metadata is always as up to date as possible and that the local changes are always uploaded to the remote. One option is to have a very fast (5-10 second) update cycle, but it is also possible to upload these changes immediately.