" and ' in user or project names break room reservations

[JobDoesburg]

One-sentence description

" and ' in user or project names break room reservations

How to reproduce the bug

1. Have a user or team with a " or ' in their name of project name reserve a room
2. It breaks the page

This is because the calendar events are inserted in a data- attribute on the calendar object in the DOM. This should be done in a different way

Expected behaviour

Not do this, and probably load all events via API instead of putting them in the DOM directly