Summary:
Ref T13382.
- Remove "bin/people profileimage" which previously generated profile image caches but now feels obsolete.
- Replace it with "bin/user", with "enable" and "empower" flows. This command is now focused on regaining access to an install after you lock your keys inside.
- Document the various ways to unlock objects and accounts from the CLI.
Test Plan:
- Ran `bin/user enable` and `bin/user empower` with various flags.
- Grepped for `people profileimage` and found no references.
- Grepped for `bin/people` and found no references.
- Read documentation.
Maniphest Tasks: T13382
Differential Revision: https://secure.phabricator.com/D20724
