Datagrid help cell refers to a "openPopup" JavaScript function

[keul]

I never used this kind of column, but working on another PR I found that the HelpColumn add an icon that try to call a openPopup JS function never defined in the package.

What is this?

[miohtama]

Sounds like Plone 3 leftover or something. In any case, this should probably use jQuery Tools (if people are still sticking to it with Plone 5).

[mauritsvanrees]

I see in Plone 3 that kupu defines it in Products/kupu/common/kupuhelpers.js.

[keul]

OK, tomorrow I'll try to do something with jQuery Tools (in any case it will be better that a broken feature, like now is)