Pagination object in PMA does not return correct value for 'size'

In [1], it was decided to rename 'pageSize' to 'size', however, there is lost in communication here: 'size' in the SPA / PMA means the actual number of items on the current page, not the page limit size. Therefore, suggested to make the following adjustment

1. size in PMA pagination should reflect actual amount if items
2. introduce 'limit' which is the page size limit

I've discussed this with mdokolin

[1] https://docs.google.com/document/d/1z-N8Bz6mOncC210gM6xitkweUozPxfYtj0_DEullBlY