example/sphere_hunter: Clean up source code.
example/sphere_hunter: Clean up source code.

- Remove shadow variable.
- Don't call elm_init() twice. It is called automatically when you use
ELM_MAIN() macro.
- Don't set weight/align to swallowed objects.
- Set weight first before adding the object to window's resize object.
- Show window after creating all of its content.

rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary,tasn/elementary,tasn/elementary,tasn/elementary,rvandegrift/elementary,rvandegrift/elementary,rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,FlorentRevest/Elementary