* new cert for gstlalcbc user
 * new default values for gunicorn configuration
 * remove `Labels:` row from superevent table in public-facing view (@roberto.depietri)
 * add a link to return to object page from files page
 * relax annotation throttle for authorized users
 * lots of pre-O4 cert changes
 * test change to improve performance of public view

not as fast, but it looks to be more stable and less
resource-intensive. See this:

!63

This allows for persistent database connections for workers.

Use the 'sync' worker still due to issues with handling file
uploads when gunicorn uses at least 6 but possibly more than 2
workers.

Upgrade gunicorn to 19.9.0 and switch to an asynchronous
worker class