Added avatars to users
Added avatars to users
Rebased
Removed a file
Merge branch 'feature/api_add_avatars_url_to_users' of github.com:opf/openproject into feature/api_add_avatars_url_to_users
Merge branch 'dev' into feature/api_add_avatars_url_to_users
Merge pull request #1540 from opf/feature/api_add_avatars_url_to_users

Added avatars to users
Added some properties to the API user representer
Added API show user endpoint
Added links and embedded resources to the work package API resource
Merge branch 'feature/api-create-user-show-endpoint' of github.com:opf/openproject into feature/api-create-user-show-endpoint