[MSOURCES-134] Refresh download page

[slawekjaranowski]

Following this checklist to help us incorporate your
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• Make sure there is a JIRA issue filed
  for the change (usually before you start working on it). Trivial changes like typos do not
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• Each commit in the pull request should have a meaningful subject line and body.
• Format the pull request title like [MSOURCES-XXX] - Fixes bug in ApproximateQuantiles,
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• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Run mvn clean verify -Prun-its to make sure integration tests checks pass. A more thorough check will
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