Add missing step in OpenShift docs

Fixes #303.
Merge pull request #304 from Koronen/openshift-gemfile-lock

Add missing step in OpenShift docs
Filter out unprintable characters in StoryRepository#sanitize, fixes #295
Ignore the gemset file
Ensure there's a temp folder
Quiet down that test output
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[closes #307]
Move test log output to log folder
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Merge pull request #309 from jonallured/master

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