add release note for resizable sidebar
[static vars]: https://concourse-ci.org/vars.html#static-vars
[dynamic vars]: https://concourse-ci.org/vars.html#dynamic-vars
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+#### <sub><sup><a name="5782" href="#5782">:link:</a></sup></sub> fix
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+* The sidebar can now be expanded in the UI - no more long pipeline names being cut off! #5782
