JP: translated head, skin, and profile heading and half translated show helm

Profile heading プロフィール
Head heading to 頭
Skin heading to 皮膚
Show helm half translated to Show 兜 (Not sure how to integrate show into that sentence)

Also, I'm not sure how I accidentally did this, but the changes from develop branch were merged on my ja_trans branch, but it should be okay to merge with. If not, please let me know and I will try to reverse it.