refine initialize cage
add spring_cage
implement force_spring_helper
refine make-menu-list
refine src/app/method_def/item.rb
include limited_action
refine save-data
consider spring in load
rename cage to slave_cage
fake implement spring service
implement spring_slave_list
implement list_spring_cage
rename about spring_cage
implement idle-slaves in spring
refine spring_idle_slaves
refine list_spring_cage
refine list_spring_cage, add slaves on-spring
refine list_spring_cage
fix bug of spring-building