UI styling improvements: dashboard headers and navigation

- Restore blue PageHeader on Dashboard (/app-components)
- Update homepage (/) with subtle header design without blue bar
- Add uniform PageHeader styling to application edit page
- Fix Rapporten link on homepage to point to /reports overview
- Improve header descriptions spacing for better readability

frontend/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "zira-frontend",
+  "name": "cmdb-insight-frontend",
   "version": "1.0.0",
   "type": "module",
   "scripts": {