Beta Testing Round 3 Bug Fixes (#1357)

* Clean up env example files

* Fix duplicate category creations

* Fix duplicate tag and merchant creation

* Add initial valuation to imported accounts

* Add upgrade modal prompt

* Don't hide content on billing page

* Add temporary session for new customers

* Lint fixes

* Fix unused translations

* Fix system tests

config/routes.rb

@@ -26,9 +26,11 @@ Rails.application.routes.draw do
     resource :billing, only: :show
   end
 
-  resource :subscription, only: %i[new show]
+  resource :subscription, only: %i[new show] do
+    get :success, on: :collection
+  end
 
-  resources :tags, except: %i[show destroy] do
+  resources :tags, except: :show do
     resources :deletions, only: %i[new create], module: :tag
   end