Improve Git configurations in general.

Grixis

Hello,

I believe it could be interesting to improve the interface for configuring the security of dataiku nodes. On the visual aspect but also to have more config parameters.

a few examples;

• At the interface level, to be able to choose groups from the list available on the instance.
• To be able to manage segregation methods other than simply all the members of a dataiku group.
• Switch to the new main branch naming convention from master to main to keep up with gitlab convention.

Best,

Martin