[Web interface]Improve FAQ accesses

2 ideas on the web interface :

on a project page, on the top-right corner below the data overview frame : adding a sentence "You can add a collaborator to your project : visit the NG6 FAQ > How to add a user to my project?
On the run view, in the Raw Data tab, below the "Retention date" frame : adding "There is a fast way to retrieve your data, more information in the NG6 FAQ > How to get my data?
On an analysis view, in the Download section, same sentence as above : "You can retrieve your data easily, more information in the NG6 FAQ > How to get my data?
Be more explicit with the download by URL on windows in the FAQ

Edited Sep 01, 2021 by Audrey Gibert