make controller of cluster & try to use SSH connection
get func of getting routing history & each instance status & file size
add ROMA version check func
add information
development basic function of cluster information
modify some process & value name
undertook to develop test
add some modification
modified source from view to helper
remove unnecessary comment
modified cluster view & helper
Merge remote-tracking branch 'remotes/banrui/master' into ph3
add <br> & remove unnecessary line
add rspec test of recover confirmation
use eval command
add inactive behaivor
add breakline
Merge remote-tracking branch 'remotes/origin/ph3'