Ensure all controller index pages have pagination or similar, to prevent ever displaying 1000's of records accidentally

[CloCkWeRX]

From #1471

 def index
    @accounts = Account.all.order(created_at: :desc)

seems common in a few places, we should hunt these down and make sure there are sane limits/pagination/etc where appropriate

[Br3nda]

• [ ] controller specs for pagination
• [ ] feature specs for pagination