Unable to retrieve content for github.

[mathwhiz1212]

I can't add any issues, download pages or anything on github to wallabag.
It either says Untitled and there is no content in it or it says unable to retrieve full text content.

[tcitworld]

The issue can be linked to this : sebsauvage/Shaarli#94

[mathwhiz1212]

Also it may be of note that this does the same through the bookmark, browser extension or save a link in wallabag.

[tcitworld]

Of course, there's also the site config missing issue.
It will be tricky, though, to have issues and pages.

[tcitworld]

Discussion on #1198