Update the presentation video and add the button back
We need to update the presentation videos with the up-to-date interfaces and colors.
Contributor side: upload of a resource, validation of another
Searcher-side: upload of a request and filtering into the resources
Public side: filtering into the resources
One videos exists, send them to Hanna to add the proper disclaimers/logos and then, add the block back with a popup allowing us to display the video.