undertook to dev storage
change stylt to JS
add simple get & cpdb
developed basic logic
try to use form tag
change validation point to JS
add snapshort date & status to ROMA main & undertook adjust
add progress checking
adjust stopping during snapshot
add validation
remove unnecessary comment
restrict to root user about set func
Merge branch 'ph6_dev' into ph6_review
add unit test of storage func
developed unit test
add & modify (404/500) Error
change logic of 404/500 error
modify about 404 error handling
Merge branch 'ph6_dev' into ph6_review
adjust changing main unit