WIP: Respect folder SynchronizationEnabled flags only for full sync
If a full sync is performed, only folders with the SynchronizationEnabled flag will be synced. This change makes it so that when individual folders are synced the flag is ignored. In other words, when the user refreshes an individual folder, it will be synced independent of the flag.
This allows the user to configure (using the folders' SynchronizedEnabled flags) which folders should be synchronised when a full sync is performed, without it affected the ability to explicitly update an individual folder.