Feature: Improve reports ui (#7032)

* Further improvements to Reports UI

- Clean up notes display
- Clean up add new note form
- Simplify controller
- Allow reopening a report with a note
- Show created at date for reports
- Fix report details table formatting

* Show history of report using Admin::ActionLog beneath the report

* Fix incorrect log message when reopening a report

* Implement fetching of all ActionLog items that could be related to the report

* Ensure adding a report_note updates the report's updated_at

* Limit Report History to actions that happened between the report being created and the report being resolved

* Fix linting issues

* Improve report history builder

Thanks @gargron for the improvements

config/locales/en.yml

@@ -256,8 +256,8 @@ en:
         title: Filter
       title: Invites
     report_notes:
-      created_msg: Moderation note successfully created!
-      destroyed_msg: Moderation note successfully destroyed!
+      created_msg: Report note successfully created!
+      destroyed_msg: Report note successfully deleted!
     reports:
       action_taken_by: Action taken by
       are_you_sure: Are you sure?
@@ -266,15 +266,20 @@ en:
       comment:
         label: Report Comment
         none: None
+      created_at: Reported
       delete: Delete
+      history: Moderation History
       id: ID
       mark_as_resolved: Mark as resolved
       mark_as_unresolved: Mark as unresolved
       notes:
         create: Add Note
         create_and_resolve: Resolve with Note
+        create_and_unresolve: Reopen with Note
         delete: Delete
-        label: Notes
+        label: Moderator Notes
+        new_label: Add Moderator Note
+        placeholder: Describe what actions have been taken, or any other updates to this report…
       nsfw:
         'false': Unhide media attachments
         'true': Hide media attachments