Require password when changing approval rules and protected branch settings

Problem to solve

Write access controls, including protected branch and approval rules, are very important. GitLab allows users to stay signed in for long periods of time making it easy for someone with physical access to the computer to walk past and change these settings if the computer was unlocked. In a shared office environment, this would be quite east.

Proposal

Require the user to confirm their password when modifying the protect branch or approval rule settings