convert: handle changeset sorting errors without traceback (issue3961)

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branch : stable
i18n-it: do not translate rst syntax

".. container::" and ".. note::" are rst syntax and therefore must not be
translated.

--HG--
branch : stable
Added tag 2.7-rc for changeset f0d7721d7322

--HG--
branch : stable
Added signature for changeset f0d7721d7322

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branch : stable