Bugfix: Pagination renders unnecessary ... skip label

In cases where the pagination should only render 4 pages at once
and 4 are available, it rendered a skip label `< 1 2 ... 4 >` even if it's not required.

Now this is fixed and it renders `< 1 2 3 4 >` instead.

https://github.com/owncloud/owncloud-design-system/pull/1406
