Add showFilterWithList option

[fremail]

Added a new option. When it's true, it adds 2 differences to the lib work:

1. It puts a filter input outside of the header block (then clicking on that field doesn't close the dropdown)
2. The filter is shown only when the dropdown is expanded.

These changes allow to show the filter when the dropdown is expanded, so filtering is enabled for mobile device users (a keyboard is swon when an input is focused, but if there's no input visible, then no way to put a focus and trigger the keyboard).

P.S. I have no idea why I have updated files in ./js/lib/* dir in this PR and not in another. I ran both npm run dev and npm run prod on both branches.