Allow events not set in the global area to run

Most events tend to be namespaced under the <global> area in magento.
However sometimes it is preferable to only have events fire when
in the context of magento's admin system, or alternatively only via actions
from the frontend. There is also the 'admin' area as well which can have events
specifically targeted at.

This PR ensures all event areas are loaded so unit tests can target any
particular store area and have events fire.
Remove bundled std testcases being linked in by modman/composer