initial page for signing in with steam

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add logout method

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add user loader for flask-login

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alert to change and DEBUG

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add flask-openid requirements

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modify user model for steam auth

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rip out flask-login stuff - steam openid only for now

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itialize openid

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fixed up get_or_create

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index link points to /login now

refs #2
added view logic for steam auth

refs #2