Added a new column "options" to the Workspace, Application, and Application version table. Added a database migration to update these, and updated how the initial database is created to allow future migrations to go a lot more smoothly.
Added details about how to upgrade through the database schema change in the last revision.
Upgraded OpenResty to a newer version, that includes a version of Nginx that supports websocket proxying. Updated the router configuration to support this, and add some tests around websocket proxying.
Added details to the UPGRADING document about the Nginx/OpenResty upgrade from the previous commit.