Bookable timeslots are always 30 minutes apart regardless of the specified event type duration #13

Before submitting

• I've searched existing issues and this isn't a duplicate.
• This is a reproducible bug in Calnode — not a configuration/setup question or a feature request.

What's the bug?

Hit there, I noticed a strange bug in the booking process. It seems like no matter what the duration of an event type is, the bookable timeslots that appear in the booking form are 30 minutes apart. It should be mentioned that the event that gets added to the connected calendar is of the intended duration. The duration doesn't seems to have a connection to this bug, as I have tried multiple different durations and the issue is persistent across all the cases.

Steps to reproduce

1. Create an event type
2. Set the duration as something different than 30 minutes
3. Click "preview booking page"
4. Select a day
5. Observe the available timeslots

Calnode version / commit

v0.5.0

How are you running Calnode?

Self-hosted — Docker

Logs, screenshots, or anything else