Fix rule loading

Separate SparkSQL dependencies [ci drivers]

Sort the /admin/people list by last_name & first_name

Return generic error message for nonexistent API endpoint 404 message

Previously this only adjusted it for the 1x dyno, the 2x dyno would also run out of memory since version 0.28, this fixes that.

Update Heroku docs with tips about logs and out of memory errors

[0.29.1] Fix xray tests 

Fix SparkSQL driver registration

Allow saving FieldValues for list Fields if over the limit

Issue 7537

xrays: keep rules in memory

xray: don't capitalize items in the sidebar

xray: add fallback to GenericTable