feat: 🍰 Send Feedback To Reporting User (second approach)

Created by: Tirokk

Authored by Tirokk Mar 9, 2020

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🍰 Pullrequest

Notify the reporting user.

Issues

• relates #1709

Todo

• write test for Notification.vue in Notification.spec.js
• implement new notifications on Notifications Page
• write new story notification for the filed report
• write database manipulation script: Create notifications for all old filed reports to all of their submitters.
• write database manipulation script: Set report.disable correct again (passed on with @mattwr18 by issue: Database migration to set Report.disable #3412)
• show createdAt and updatedAt on the notification?
• set property on reported resource for checking is already reported by current user
  • use this property for disabling the report menu item on the resource
• do a performance test on staging