Hide paginator if not needed

[zorn-v]

There is no sense to show paginator if there is only one page

[javiereguiluz]

I like this. Can you please take a look at tests? We'd need to tweak some test for these changes. Thanks.

[zorn-v]

In a good way need to write one more test, but I did not find how to configure page size dynamically for one test.

[javiereguiluz]

Thanks @zorn-v.