Fix for broken RSS feeds
Show 15 users in the top contributors sections

[#43446267]
Revert "Don't exclude old items with recent votes from 30-day karma calculations"

This reverts commit c2d55e5c2b330fe9ae8b4472a7655b333e31cdc4.
Don't show up and down vote count in side bar

[#43447297]
Fix for query locking up db/app server

The previous code retrieved all votes for a given account then just took a count of them. One user in question had over 5000 comment votes, which was causing PostgreSQL to sometimes kill the query with the error, "stack depth limit exceeded HINT:  Increase the configuration parameter "max_stack_depth", after ensuring the platform's stack depth limit is adequate."

[#43729801]