Do not use nxdrive protocol from the FinderSync extension

When running the tests on the Rainforest VM's the testers are having an warning message from the OS : "There is no application set to open the URL nxdrive://trigger-watch"

This is making the testers to fail the tests, If you click on cancel on the popup the app is installed nevertheless.

Steps to reproduce

• download nuxeo-drive.dmg
• go to applications folder on the OS
• click on the nuxeo drive app
• (warning appears)

NOTE: I only reproduced it on the Rainforest VM's and I'm adding Severity: Major because its making all the tests fail.

Please close the ticket if the conclusion is that the problem is on Rainforest side only