[Sprint/PinkPanther](feat): Force hashtag pipe to lowercase in discovery #2088

Benrequested to merge
feat/lowercase-tag-discovery-2088 into master

Closes #2088 (closed)

Summary

When clicking a hashtag from a post, this forces the querystring to take the hashtag in as lowercase. On production right now; clicking #NAME would send you to /newsfeed/global/top;hashtag=NAME;period=24h, and we want /newsfeed/global/top;hashtag=name;period=24h

Testing

Try variations on capitalising tags and clicking them, it should link through and relevant content should be found.

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