Enhanced booking in station-popup

[LucasForster]

The current flow when booking a bike takes the user away from the map and to the bookings tab. While a direct link back to the booked station exists, staying on the selected station popup greatly enhances the user experience in my opinion.

This pull request contains the following changes:

• a current booking can be canceled from the same button it was initiated from
• the booking button now explicitly says that the most-charged bike will be reserved (one could have thought that a specific slot can be booked after selecting it)
• after booking, the popup automatically refreshes while staying open to reflect the changed state (in the past, this wasn't necessary due to directing the user to the bookings tab)
• when selecting another station while still having a booking for a different one, the button additionally tells the user which station the cancellation affects (and thereby there should be no confusion about which station the booking belongs to)
• the station-popup automatically selects the slot which has been booked (as if the user clicked it) (the renting slider becomes more specific than "most-charged bike") (naturally, another slot can still be selected and rented instead)

[NeoLegends]

Please run prettier on the changes :)

[NeoLegends]

I'll try and do the proper (?) formatting after the merge, so don't worry about code style & prettier.

[LucasForster]

Additonal changes:

• 111da22f79ea8cae18c1cd03813c053a92f8405a when canceling a booking from another station, the popup won't close anymore
• a1c587dfc6809b215ff566f7745cb682ef6bbe6e added some error handling for handleCancelBooking similiar to handleBook and handleRent