refactor(reporting-layout): streamline sidebar and content layout

- Replaced the existing sidebar implementation with a new ReportingSider component that accepts collapse state and toggle function as props.
- Simplified the ReportingCollapsedButton component for better readability and functionality.
- Updated layout styles to enhance responsiveness and maintain consistent margins.
- Removed unused CSS styles related to the sidebar for cleaner code.

worklenz-frontend/public/locales/de/account-setup.json

@@ -90,6 +90,8 @@
   "discoveryQuestion": "Wie haben Sie von uns erfahren?",
   "allSetTitle": "Sie sind bereit!",
   "allSetDescription": "Lassen Sie uns Ihr erstes Projekt erstellen und mit Worklenz beginnen",
+  "surveyCompleteTitle": "Vielen Dank!",
+  "surveyCompleteDescription": "Ihr Feedback hilft uns, Worklenz für alle zu verbessern",
   "aboutYouStepName": "Über Sie",
   "yourNeedsStepName": "Ihre Bedürfnisse", 
   "discoveryStepName": "Entdeckung",