don't show "first" unless the "first" page link isn't showing

[yairEO]

To make UX better, for example:

first 1 2 3 last // the "first" button is totally redundant

Should be

1 2 3 last

And then if you come to a point where 1 isn't visible anymore, render:

first 3 4 5 last

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I personally like:

1 ... 3 4 5 ... 22

So the user knows how many pages are there.

[yairEO]

I now see there are "disabled" classes