feat(avatars): profile images

Getting there! Feel free to start looking @shane-tomlinson @pdehaan.

Still needs:
- [ ] profile-server client
- [ ] progress indicator screen
- [ ] unit tests for camera view
- [ ] unit tests for cropper widget
- [x] circular overlay on cropper
- [ ] functional tests
Ah, gotcha. The intention here was to log the detailed error but display a generic user friendly message. Does/should the event logger allow us to include raw error details in addition to the error we display to users?