Change authentication cookie to last a month.
Review Request #7740 — Created Oct. 26, 2015 and submitted
By default, express-session's cookies expire when the browser session closes.
This is annoying, since it means re-authorizing frequently. This change sets a
maxAge for the cookie to 30 days.
Logged in and checked the expiration on the session cookie.
Tool: Pyflakes Ignored Files: server.js Tool: PEP8 Style Checker Ignored Files: server.js