Board Thread:Editor Board/@comment-6697950-20130702100722/@comment-6697950-20130703071357

Found it. It was Ethundr: http://swordartonline.wikia.com/wiki/List_of_Sword_Art_Online_episodes?diff=26562&oldid=25968

He also added a "Theme song" category, with only 1 entry again. The "characters" category he added was removed by Dim, if I remember correctly.