Show solutions of ranked users along with followers'
Only display solutions of top users which have valid code
Typos
Extract `follow-button` for use on other pages
Revert "Extract `follow-button` for use on other pages"

This reverts commit 4e8a0c4e11f80ec0cf171f507a06d778a2ac2a86.
Link to user profiles in solution list
Solution page: clearer heading