A: Apply new challenge fetch policy to listinig page

[sushilshinde]

I. Implement for non-auth users
II. The change applies to these challenge buckets

1. All Challenges
2. Open for registration
3. Ongoing challenges

III. It should work with all the filters
IV. Count panel should show correct counts
V. Sorting and searching should be remote

[Oanh-and-only-Oanh]

@sushil, for @LieutenantRoger to begin these performance tickets, he is currently waiting for the metadata.json change at client side to incorporate the group features. Can you give update on that work and when we can expect that to be complete so @LieutenantRoger can begin his work?

[rootelement]

This says waiting for an API fix, but I see no action or linked issue here. @Oanh-and-only-Oanh @sushilshinde please confirm what's needed here or clean up the label please.