ambiguous column name: createdAt - on checkin_details view

[simonw]

It looks like Swarm changed their schema and now both venues and checkins have createdAt fields.

Which breaks this view:

swarm-to-sqlite/swarm_to_sqlite/utils.py

Lines 171 to 188 in 719b6e9

	select
	checkins.id,
	created,
	venues.id as venue_id,
	venues.name as venue_name,
	venues.latitude,
	venues.longitude,
	group_concat(categories.name) as venue_categories,
	shout,
	createdBy,
	events.name as event_name
	from checkins
	join venues on checkins.venue = venues.id
	left join events on checkins.event = events.id
	join categories_venues on venues.id = categories_venues.venues_id
	join categories on categories.id = categories_venues.categories_id
	group by checkins.id
	order by createdAt desc