Bug and typo fixes to the CLI

- Update copyright year
- Import missing exception and catch it
- Fix version
- Add ActionError class that is thrown in the code and catch it
- Use user instead of username where it is meant to
- Sort the output of the list command
- Use POC since we don't use owner anymore
- Fix typo action != actions
Add a login mechanism, use requests' json converted and use a session local to the object
Support login in with the CLI and updating ACL request
Fix login against other instances of pkgdb, remember the user's username and fix the update_acl call
Work on pkgdb2-cli

- Save the user's username
- Only consider the active branches when retrieving the active branches
- Add option to unorphan all my packages (you never know)
- Adjust owner to poc
- Fix the do_orphan method for pkgdb2
- Fix the do_unorphan method for pkgdb2
- Fix actions -> action in do_request
- Fix the do_request method for pkgdb2
- User get when retrieving messages to be on the safe side
- Add little more debuging information when something goes south.