Refactor forum UI to improve asymptotic performance
NestedForumAdapter has some methods that run in O(N^2) time. Refactor the forum code so we don't need nested loops to calculate things like visibility and descendent counts.
NestedForumAdapter has some methods that run in O(N^2) time. Refactor the forum code so we don't need nested loops to calculate things like visibility and descendent counts.