Feature: Report improvements (#6967) (#7000)

* Implement Assignment of Reports (#6967)

* Change translation of admin.report.comment.label to "Report Comment" for clarity

As we'll soon add the ability for reports to have comments on them, this clarification makes sense.

* Implement notes for Reports

This enables moderators to leave comments about a report whilst they work on it

* Fix display of report moderation notes

* Allow reports to be reopened / marked as unresolved

* Redirect to reports listing upon resolution of report

* Implement "resolve with note" functionality

* Add inverse relationship for report notes

* Remove additional database querying when loading report notes

* Fix tests for reports

* Fix localisations for report notes / reports

config/routes.rb

@@ -137,6 +137,8 @@ Rails.application.routes.draw do
       resources :reported_statuses, only: [:create, :update, :destroy]
     end
 
+    resources :report_notes, only: [:create, :destroy]
+
     resources :accounts, only: [:index, :show] do
       member do
         post :subscribe