Internationalisation: string not being translated in navigation menu about data-standard-sphinx-theme

[rhiaro]

It's because the name is included via the project variable on https://github.com/openownership/data-standard-sphinx-theme/blob/master/oods/sphinxtheme/navbar.html#L5 which is set in the main data-standard repo config https://github.com/openownership/data-standard/blob/master/docs/conf.py#L57

OCDS solves this problem by not using the project variable in the template, and inserting the string directly wrapped in trans blocks: https://github.com/open-contracting/standard/blob/1.1-dev/standard/docs/en/_templates/layout.html#L7

[siwhitehouse]

This is fixed by #51