- Redirect from inactive languages to EN (doc bug #77637)

You can view the Pull Request on github:
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Opened By: salathe
Pull Request Description:
This patch adds in redirects from manual page links for inactive languages to go to their English equivalent.

For example, since our Bulgarian translation is marked as inactive, visitors going to <a href="" title=""></a> will get redirected to <a href="" title=""></a>