Added sticky-header functionality

[lauriii]

No description provided.

[lewisnyman]

Nice, this is looking good. I had to change the path to the debounce lib to get it to work, there is a bit of a delay when scrolling which is kind of distracting, is there a way to just have it fixed like it is in core?

[lauriii]

I think its problem on the debounce library. We could also choose not to use it

[lewisnyman]

It looks like this library works quite well, if we use this then we have less custom code, what do you think? https://github.com/jmosbech/StickyTableHeaders

[lewisnyman]

Ooh maybe we can use position: sticky; and then polyfill it with https://github.com/filamentgroup/fixed-sticky? Then we get the best performance

[lewisnyman]

I tried using the polyfill in https://github.com/lewisnyman/drupalcores/tree/super-sticky-table but it sucked
I also tried using another library in https://github.com/lewisnyman/drupalcores/tree/stikcy-table-headers but there are a few minor problems, because if you use the #contributor link then it gets covered up by the sticky header, we would also need to implement a custom handler for that behaviour