fix-141: Show "do not record" icon on schedule calendar view

[it-tma-tri]

This PR closes/references issue #141 . It does so by changing the fav icon css class to correct one

How has this been tested?

Checklist

• [x] I have added tests to cover my changes.

Summary by Sourcery

This pull request fixes issue #141 by updating the CSS class for the 'do not record' icon in the schedule calendar view to ensure it displays correctly.

• Bug Fixes:
  • Corrected the CSS class for the 'do not record' icon in the schedule calendar view.

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This pull request addresses issue #141 by updating the HTML and CSS classes for the 'do not record' icon in the schedule calendar view. The changes ensure the correct icon is displayed with the appropriate size and styling.

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[mariobehling]

Hi, I dont understand this change. The screenshot show the "do not record" button at the same area where it was before, right?

The goal of this issue is to add the button into the calendar view, e.g. here https://wikimania.eventyay.com/2024/schedule/

See screenshot of calendar view below.