incorrect escaping of character in url

[Piotr Gackowski]

I just got couple times links like this: https://en.wikipedia.org/wiki/Van%20&39;t%20Hek

when it should be en.wikipedia.org: Van 't Hek van 't Hek may refer to: Tom van 't Hek, Dutch field hockey player Youp van 't Hek, Dutch comedian... https://www.wikidata.org/wiki/Q7913089

[Waldir Pimenta]

I also came across this issue, and originally reported it as issue #64:

Item Q2048322 had a link to ptwiki as follows: https://pt.wikipedia.org/wiki/Palmyro%20Paulo%20Veronesi%20d&39;Andr%C3%A9a -- this results in an "invalid title" error. The correct URL would be https://pt.wikipedia.org/wiki/Palmyro_Paulo_Veronesi_d%27Andr%C3%A9a

[Waldir Pimenta]

Issue #64 was marked as a duplicate of this issue.

[Magnus Manske]

Should be fixed by recent pull request

[Magnus Manske]

Issue #74 was marked as a duplicate of this issue.

[Waldir Pimenta]

Duplicate of #26.