Enhance admin dashboard with block day functionality, improve appointment details, and update footer animations

- Added a section in the admin dashboard for blocking calendar days with a form to submit block dates and reasons.
- Implemented a list of blocked days with the ability to unblock them.
- Enhanced appointment details to include meeting type and location information.
- Updated styles for blocked days in the appointment calendar.
- Improved footer design with animations and responsive adjustments.
- Removed unused license transfer forms from admin and user license templates.
- Changed database name references from 'Inventarsystem' to 'Invario_Website' in user management functions.

Website/data/appointments.json

@@ -1,58 +0,0 @@
-[
-  {
-    "id": "a-1774281965267",
-    "username": "Aiirondev",
-    "display_name": "Maximilian Gr\u00fcndinger",
-    "date": "2026-03-24",
-    "time": "10:00",
-    "subject": "Test",
-    "note": "",
-    "status": "Abgelehnt",
-    "created_at": "2026-03-23T16:06:05Z",
-    "response": "Es geht leider nicht um die von ihnen angefragte Uhrzeit, bitte versuchen sie es zwei Tage sp\u00e4ter",
-    "responded_at": "2026-03-23T16:06:52Z",
-    "responded_by": "Aiirondev"
-  },
-  {
-    "id": "a-1774287654152",
-    "username": "Aiirondev",
-    "display_name": "Maximilian Gr\u00fcndinger",
-    "date": "2026-03-26",
-    "time": "10:00",
-    "subject": "Test",
-    "note": "Test",
-    "status": "Bestaetigt",
-    "created_at": "2026-03-23T17:40:54Z",
-    "response": "Wunderbar bis dann!",
-    "responded_at": "2026-03-23T17:41:10Z",
-    "responded_by": "Aiirondev"
-  },
-  {
-    "id": "a-1774296722216",
-    "username": "Aiirondev",
-    "display_name": "Maximilian Gr\u00fcndinger",
-    "date": "2026-03-27",
-    "time": "14:30",
-    "subject": "Erst Gespr\u00e4ch f\u00fcr Grunschule ...",
-    "note": "Erste kontakt aufnahme",
-    "status": "Bestaetigt",
-    "created_at": "2026-03-23T20:12:02Z",
-    "response": "Ja passt so, wir kommen vorbei",
-    "responded_at": "2026-03-23T20:12:43Z",
-    "responded_by": "Aiirondev"
-  },
-  {
-    "id": "a-1774335231538",
-    "username": "Aiirondev",
-    "display_name": "Maximilian Gr\u00fcndinger",
-    "date": "2026-03-26",
-    "time": "13:00",
-    "subject": "Erst Gespr\u00e4ch",
-    "note": "Test",
-    "status": "Bestaetigt",
-    "created_at": "2026-03-24T06:53:51Z",
-    "response": "Es w\u00fcrde an dem von ihnen andgefragten Datum eine Stunde gehen",
-    "responded_at": "2026-03-24T06:54:42Z",
-    "responded_by": "Aiirondev"
-  }
-]