Bug/https problem

As reported by @Genferei:

When doing a SPARQL query, for instance this one, the links appear to point to an http page instead of https.

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For instance http://wiki.personaldata.io/wiki/Item:Q1000 instead of https://wiki.personaldata.io/wiki/Item:Q1000.
This is annoying as it constantly logs us out.

• An option seems to be to install the REDIRECTOR add-on for Firefox, which can be configured like this:

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In this interactive window, the last entry is autogenerated given the others. (check!)

New Wikibase instance

The same thing happens with a new wikibase instance, where it is easy to misconfigure the query system to return the wrong endpoints.