More flexible, less error-prone configuration system.

WARNING: make a backup copy of your local config.py before pulling
this change, as Git will overwrite it without warning.

The configuration defaults to deployment settings, allowing overrides.
Overrides are read from config_local.py and from the file pointed to
by the PILLAR_CONFIG env var.

.gitignore

@@ -5,11 +5,11 @@
 *.ropeproject*
 *.swp
 
-config.py
+/pillar/config_local.py
 
 .ropeproject/*
 
-pillar/application/static/storage/
+/pillar/application/static/storage/
 /build
 /.cache
 /pillar/pillar.egg-info/