v0.8.2 - Can-shaped Cranberry Sauce

A minor release while orgs + RBAC etc. work continues on the 1.0.0-dev branch.

This release fixes a couple of typos, one with checking errors when checking for the existence of a client in SQL mode, and one for the option to use postgres in the sample config file. The use-postgresql option was documented correctly elsewhere, but was listed incorrectly as use-postgres in the sample config file. This release also adds some checks to make sure the directory given for the local filestore exists, and is a directory.