Transform firefox opening into printout in the end (closes #41); Replace badge f…

…or stable doc version

This is the last fix for bob.admin#2 (closed)

enabled an automatic merge when the pipeline for 630c3cf1 succeeds

added 1 commit

• 3e4767dd - Import missing pkg_resources

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added 1 commit

• 7f4dd245 - Use only https resources in README

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added 1 commit

• 7f4a5b06 - Fallback to 'stable' if version is not attainable

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enabled an automatic merge when the pipeline for 7f4a5b06 succeeds

merged

mentioned in commit 4bf88d55