This was breaking the docs :(
conf load errors downgraded to warnings

The lack of a config file can eventually trigger ImportError, which
(among other things) breaks our docs build. It's also really rude.
This is now a warning, which prints a nice error message without
breaking everything.
Merge pull request #614 from seandst/docs-fix

conf load errors downgraded to warnings
DB queries
Update configure navigation to work