fix: use same datetime display format as farmOS

at least i think this is right..anyway this is how you change it

src/wuttafarm/app.py

@@ -31,6 +31,8 @@ class WuttaFarmAppHandler(base.AppHandler):
     Custom :term:`app handler` for WuttaFarm.
     """
 
+    display_format_datetime = "%a, %m/%d/%Y - %H:%M"
+
     default_auth_handler_spec = "wuttafarm.auth:WuttaFarmAuthHandler"
     default_install_handler_spec = "wuttafarm.install:WuttaFarmInstallHandler"