Introduced a notion of Montague Standard Format.

Montague Core (loadwsgi.py and supporting code) has no notion of INI syntax ("application:foo") or the `filter-app` and `pipeline` types that PasteDeploy specifies. The PasteDeploy INI handling (ini.py) translates these to standard application and filter configs.

As a result of adding this translation, I've also added support for 'use' referencing another section in the config file, inheriting its configs but adding its own.

I've removed the JSON-INI sample config loader, as it adds no usefulness to the tests with this new standard config structure.