Include Button for jsx-no-target-blank check

[Joozty]

More info can be found here

[Joozty]

We cannot configure Button as a link component because we can get false warnings since the button can have any tag passed down. Maybe we should create a new component called Link with hardcoded a element.

[viktor-yakubiv]

I created #205 as you suggest here. We should adopt Link for the button and disable tag support for the Button. Let's assume that the buttons have a semantic value always and are either pure buttons or links.