Feature/paginator

[romaninsh]

Merge #93 before (although - not a dependency)

This is implementation of Paginator component:

The component can work on it's own, it does not need to be attached anywhere. You can manually specify number of total pages to the paginator. The above output:

$layout->add(['Paginator', 'total'=>40]);

Multiple paginators will not affect each-other.

Paginator can reload other view which can synergise by pulling current page from paginator.

$seg = $layout->add(['View', 'ui'=>'blue segment']);
$label = $seg->add(['Label']);
$bb = $seg->add(['Paginator', 'total'=>50, 'range'=>2, 'reload'=>$seg]);
$label->addClass('blue ribbon');
$label->set('Current page: '.$bb->page);

[DarkSide666]

I don't see this implemented

[romaninsh]

in renderView() method.

[romaninsh]

https://github.com/atk4/ui/pull/94/files/bad925285feb1864eeb7f755823caec34b4e8041#diff-b7dae88f55a82631386bada74d3d1e9fR186

[DarkSide666]

sorry, missed these lines :)