Nicely report unknown variables in config files

Previously we would just raise an ugly exception, now there's a clear
error message.

1 files changed, 2 insertions, 2 deletions

diff --git a/cliapp/__init__.py b/cliapp/__init__.py
index 6e4d408..3536626 100644
--- a/cliapp/__init__.py
+++ b/cliapp/__init__.py
@@ -19,10 +19,10 @@ __version__ = '1.20130808'
 
 
 from fmt import TextFormat
+from app import Application, AppException
 from settings import (Settings, log_group_name, config_group_name,
-                      perf_group_name)
+                      perf_group_name, UnknownConfigVariable)
 from runcmd import runcmd, runcmd_unchecked, shell_quote, ssh_runcmd
-from app import Application, AppException
 
 # The plugin system
 from hook import Hook, FilterHook