Feature Request: Activity log should contain changes to project/group settings

Please see &736 for adding new individual audit events

Original description

In addition to logging commits, notes, etc. as activities attached to one's profile. I think it would be useful to log activities for important changes to settings, such as:

• Added John Doe as a Master for project Foo (with expiration 10/12/2018)
• Created tag ~test in group Bar
• Protected branch my-important-branch in project Foo

In response to actions within the settings of a project. This might be useful to reference if anyone ever need to determine when and by whom a tag was created or a branch was protected. It may also be useful in a security audit if one needs to find out exactly how somebody ended up gaining their role/permissions within a group or project.