Add repository and add branch buttons hovering on page

Steps to reproduce:
1. Create a new freestyle project
2. You should see an add branch and add repository button floating like in the screenshot

If you scroll past them they will disappear, refresh the page to make them re-appear
If you click them they will create more floating buttons.

note: the behaviour is different on 2.264 (includes tables to divs), the buttons don't disappear and they create a new element with a close button