[modify] board category to be required.
[modify] board category to be required.

bee01/shirasagi,hotmix/shirasagi,itowtips/shirasagi,ShinjiTanimoto/shirasagi,kaosf/shirasagi,hotmix/shirasagi,tany/ss,sunny4381/shirasagi,toyodundy/shirasagi,sunny4381/shirasagi,itowtips/shirasagi,shirasagi/shirasagi,toyodundy/shirasagi,bee01/shirasagi,sunny4381/shirasagi,masakiooba/shirasagi-1,tany/ss,bee01/shirasagi,itowtips/shirasagi,t-wata-cldt/shirasagi,mizoki/shirasagi,t-wata-cldt/shirasagi,hotmix/shirasagi,shirasagi/ss-handson,masakiooba/shirasagi-1,t-wata-cldt/shirasagi,MasakiInaya/shirasagi,sunny4381/shirasagi,masakiooba/shirasagi-1,toyodundy/shirasagi,ShinjiTanimoto/shirasagi,MasakiInaya/shirasagi,ShinjiTanimoto/shirasagi,koba5884/shirasagi,mizoki/shirasagi,mizoki/shirasagi,MasakiInaya/shirasagi,shirasagi/shirasagi,bee01/shirasagi,tany/ss,toyodundy/shirasagi,koba5884/shirasagi,kaosf/shirasagi,itowtips/shirasagi,kaosf/shirasagi,ShinjiTanimoto/shirasagi,shirasagi/ss-handson,mizoki/shirasagi,tany/ss,kaosf/shirasagi,shirasagi/ss-handson,hotmix/shirasagi,koba5884/shirasagi,MasakiInaya/shirasagi,masakiooba/shirasagi-1,shirasagi/shirasagi,shirasagi/shirasagi,shirasagi/ss-handson,koba5884/shirasagi,t-wata-cldt/shirasagi