Add support for multiple-element jQuery container at init (synced paginators)

[edmundo096]

Modified the logic that inserts the initial paginationjs element into the container, so that our model element jQuery sobject has a reference to multiple inserted paginationjs elements.
Whenever we make a change and listen to our model element jQuery object, it will be linked to our multiple elements (and thus, make them work in sync).

More testing should be made though.

[sb84]

For proper work, remove the line:

102. containerattributes.position === 'bottom' ? 'append' : 'prepend';

Then the code works properly, regardless of the number and location of elements on the page.