refs#4  add drag chart
refs #4 add ajax save
#6feng
#6feng save chart data
6feng  start a new interface
6feng  add choose good page
6feng
6feng add top statistics show
6feng  improve the interface
6feng delete useless
6feng
refs #6 enable/disable timed task
refs #6 refactor
refs #6 roughly implement shelfPlanRecount algorithem
refs #6 jqplot bug
6feng fix js bug