Add sessions and user controller tests, fix syntax

[gr455]

Make sure these boxes are checked before your pull request is ready to be reviewed and merged. Thanks!

• tests pass -- rake test
• code is in uniquely-named feature branch, and has been rebased on top of latest master (especially if you've been asked to make additional changes)
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• reviewed/confirmed/tested by another contributor or maintainer

Coverage after mearge: 72.23%

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