don't create activity feed items on card archive/unarchive

sidebar alignment fix

need to have `:last_login` on the user record we lookup during login.

unarchive icon

fire off different events when archiving/unarchiving/updating a card, which also prevents archive/unarhive events from going into the activity feed.  fixes #2479

Don't show download button on object detail page.

Data model flex fixes

Custom field formatting

move timeseries-query-processor-test

More strict sensible and renderable checks for line/area/bar charts

updates the form validation state immediately after any change to the slack token.

Fix duplicate "user joined" activity feed entries

Fix broken pivot table due to null dimension values

actively close db connection pools when database is deleted

Fix table sorting when clicking column header

Be more conservative with our popover z-index. Fixes tutorial page flag.

fixes #2448 by reworking the logic for determining when it's a users first login.  we no longer lookup the first session for the user because it's possible they logged out and deleted their only session, then logged in to create their "first" session.  we now use the :last_login timestamp on the User record, which is more consistent and accurate.

Fix intermittent BigQuery CI failures