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More testing
Registration redirect on bad password input.
Added flash context to login helper.
Open database
Added and implemented a `default chain` for all controllers.
The default implementation can now use a default impl. from the application controller package.
Changes to routes required updates to some views.
Changes to `User` model to support registration and validation.
Worked on authentication.
Merge branch 'develop/db-speed'
Login/logout support working from auth context.
Merge branch 'develop/user-session'