Filtration of options for List and Checkbox

[AuHau]

Related to #49, when there is a lot of options it would be good to provide the user a way how to filter out the set of options in order to find the correct one.

[timog]

Would be nice to be able to configure the number of options which are displayed.
Also jump forward/back with 'page up' and 'page down' keys and to the beginning and end with 'home' and 'end' keys would come handy with long lists.