Users are notified on real time while they edit the contents of
the Settings window.

Report errors per field, check fields for completeness, warn
users with a dialog box when they want to save incomplete settings
and make the window prettier.

Also, stop saving settings when the window closes. The settings
are saved only if the user clicks on the "Save" button.

The commands are "config list | set | delete" and can be used to
manage the agkyra settings, which can also be modified by editing
the configuration file.

The following settings can be used at cloud level i.e., each cloud
configuration can have its own SSL settings:

ignore_ssl = on | off
ca_certs = /path/to/certificates

Both settings are passed to a agkyra.syncer.SetupSyncer instance
while setting up a session.