Paging of Attribute Options in Settings

[joshzamor]

:wrench: I'm submitting a Feature Request :wrench:

Add paging to the Options tab of Attributes (selects) so that attributes with many options don't slow down over slow networks, or slow browsers.

When an attribute has 1k, 5k, 10k options, there is a delay in showing all of those options, which becomes more noticeable and in some cases unusable when the network bandwidth is limited or the browser isn't up to rendering all of the options.

In this case the ideal solution would be to page the Options tab, so that it works similarly to the product grid: options are loaded in pages, and searching for an option is possible in a paged interface.

Thank you for the consideration!