Add appeals (#17364)

* Add appeals

* Add ability to reject appeals and ability to browse pending appeals in admin UI

* Add strikes to account page in settings

* Various fixes and improvements

- Add separate notification setting for appeals, separate from reports
- Fix style of links in report/strike header
- Change approving an appeal to not restore statuses (due to federation complexities)
- Change style of successfully appealed strikes on account settings page
- Change account settings page to only show unappealed or recently appealed strikes

* Change appealed_at to overruled_at

* Fix missing method error

spec/mailers/previews/admin_mailer_preview.rb

@@ -15,4 +15,9 @@ class AdminMailerPreview < ActionMailer::Preview
   def new_trending_links
     AdminMailer.new_trending_links(Account.first, PreviewCard.limit(3))
   end
+
+  # Preview this email at http://localhost:3000/rails/mailers/admin_mailer/new_appeal
+  def new_appeal
+    AdminMailer.new_appeal(Account.first, Appeal.first)
+  end
 end

spec/mailers/previews/user_mailer_preview.rb

@@ -82,6 +82,11 @@ class UserMailerPreview < ActionMailer::Preview
     UserMailer.warning(User.first, AccountWarning.last)
   end
 
+  # Preview this email at http://localhost:3000/rails/mailers/user_mailer/appeal_approved
+  def appeal_approved
+    UserMailer.appeal_approved(User.first, Appeal.last)
+  end
+
   # Preview this email at http://localhost:3000/rails/mailers/user_mailer/sign_in_token
   def sign_in_token
     UserMailer.sign_in_token(User.first.tap { |user| user.generate_sign_in_token }, '127.0.0.1', 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:75.0) Gecko/20100101 Firefox/75.0', Time.now.utc)