Improper rendering of header links when using sort_th in django-sorting-bootstrap

[rmassoth]

I discovered a bug in the link rendering while updating to the latest version of django-sorting-bootstrap. I see that the project is archived so I'm not sure if you are accepting changes but I'd be more than happy to create a pull request to fix it. It's just missing a closing tag in the template so it's creating three of the glyphicon links instead of one. Thanks.

[staticdev]

@rmassoth go ahead, I just unarchived it. We can publish a release after that.

[staticdev]

@rmassoth thanks for the patch, are you interested in being the maintainer of this package? Otherwise I will archive it again after releasing the bugfix version.

[rmassoth]

Sure, I wouldn't mind taking over maintaining this package.