Update paginator

[balduinofernando]

These changes correct the links in the loop that has "null" as its URL, when you're in the first or last page. So, now it will not show up the previous and next page when we're on the beginning or in the end of the loop and makes the Previous and Next button comes up with the HTML arrows icons.

[svnwa]

I'm a bit confused because the "Previous" and "Next" links should not show up at all because ofthe
v-if="!isFirstOrLastOrDots(link.label) method in line 59, so the link.url !== null wouln't have any effect anyway.

[balduinofernando]

Yeah, but it's that way, you may test it your self.

I translated your package into bootstrap, and the same thing is happening.

If you are in the first page, the previous link is null, and the url also is null.

I added the suggestions I submitted, and when i am in the first page, the previous button stas hidden, and in the last page too when there's no next link.