revise weixin message content
extract meaningful name for message type conditions
fix parent creation bug
Merge branch 'master' into prod
add restriction to monday lunch, remove thursday extra restriction
add history interface
add interface for creating history with multiple images
enable classes while updating
fix parent creation logic
add more condition for creation validation
include status while children updating
include status while parents updating
more precisely inspect relationship availability
allow empployee revives status by updating
Merge branch 'master' into prod