Roundcube plugin to save and show user login information (user login history).

When a user logs in into Roundcube, this plugin:

* shows the user's last login information in a small box for N
configurable seconds;
* saves the information to a database table for history purposes.

The login history may be consulted in its own Settings tab.

If using the geolocation plugin (config option lastlogin_geolocation is true)
and you have some organization internal networks configured there, that
information will be shown. For more information, see the geolocation plugin
configuration.

The plugin provides a section in settings for the user to configure for how
long (number of seconds) to show a notification with last access information
on login.