Add filter in "recommended kingdoms"

[gillesgros]

As there is a lot of "recommended kingdoms", it would be great to have a another sidebar menu (with checkbox) to display the "recommended kingdoms" that match at least the selection

For example I want to see all the "recommended kingdoms" that use Seaside cards. Or the RK that use Seaside and Prosperity.

This came to me while trying to make kingdoms/Base-set-2.yaml and intrigue-2.yaml.

[blakevanlan]

I originally had the sidebar be checkboxes but I found that in reality I usually was browsing all available kingdoms with a specific set in mind (say Intrigue); I got annoyed at have to uncheck multiple boxes when switching around.

What do you think? Checkboxes are just better because they're more flexible?

[gillesgros]

The current sidebar (with radiobox) to browse thru the Recommended Kingdoms is the right way to do it.

I had in mind a second panel in the sidebar (or a new page) allowing to filter all the games that are defined and filter them.

[gillesgros]

deployed