AO3-6667 Languages page performance improvements

[brianjaustin]

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Issue

https://otwarchive.atlassian.net/browse/AO3-6667

Purpose

• Fetch language counts from Elasticsearch instead of the primary DB
• Round counts a bit to make temporary discrepancies (in the ones or tens place) less impactful. The counts don't need to be exact anyway
• Cache counts for 1 day to further reduce load

[sarken]

Just took a quick look and it's possible the failing tests need work_search: true to set up the indexes, like

otwarchive/spec/controllers/collection_participants_controller_spec.rb

Line 113 in 653c19c

context "where the user is a maintainer", work_search: true, bookmark_search: true do

[sarken]

Could you keep the original capitalization from the navigation actions? Our navigation should always be title case. (You can, however, drop the "a" if you want.) It also wouldn't hurt to group them under navigation like we do elsewhere to give Translation a bit more context, e.g.

otwarchive/config/locales/views/en.yml

Lines 356 to 361 in 653c19c

	navigation:
	approved: Approved
	rejected_by_collection: Rejected by Collection
	rejected_by_user: Rejected by User
	unreviewed_by_collection: Awaiting Collection Approval
	unreviewed_by_user: Awaiting User Approval

[brianjaustin]

Sounds good! I think keeping the a sounds better but I can remove it if that's the standard