Syncthing GUI credentials do not match SyncWings credentials #2
Description
At the moment, the GUI credentials for Syncthing are stored separately in the Syncthing config file.
This means that it is a unique password, and not related to the user credentials for SyncWings at all.
We should probably make sure to hash the user's password in the same way as Syncthing does, and manually add it to the config. This way we can always keep it the same.
Same idea for Filestash: the admin password should follow the password of the user in SyncWings.