Allow JP event time input in JST
Allow JP event time input in JST

This involves a bit of nasty timezone conversion, but appears to
work just fine.

rdsathene/SchoolIdolAPI,SchoolIdolTomodachi/SchoolIdolAPI,dburr/SchoolIdolAPI,SchoolIdolTomodachi/SchoolIdolAPI,dburr/SchoolIdolAPI,rdsathene/SchoolIdolAPI,SchoolIdolTomodachi/SchoolIdolAPI,rdsathene/SchoolIdolAPI,dburr/SchoolIdolAPI