Pagination improvements (#1445)

* Replace will_paginate with kaminari

* Use #page instead of #paginate in controllers

* Replace will_paginate.page_gap with pagination.truncate in i18n

* Customize kaminari views to match prior styles

* Set kaminari options to match prior behavior

* Replace will_paginate with paginate in views

config/initializers/kaminari_config.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+Kaminari.configure do |config|
+  config.default_per_page = 40
+  config.window = 1
+  config.left = 3
+  config.right = 1
+end