[1.7][1.8] Paginate creations

[swilgosz]

The issue reported by Paul:
He tried to login into the creator-box several times without success. The screen seems to be hanged on:

Here are the logs:
logs.zip

Problem description

After loging in there are all creations downloaded from creatubbles. For Pau's account there is around a thousand. We have also teacher's accounts who manage their all student's creations and they collected even more on Creatubbles.

We should add a pagination system, to collect few API pages (maybe around 100) on one creator-box page.

Then we should generate separate requests after changing page number, not all at once.