Added episode titles 15 to 17

2007-05-24
Shippuuden 015 (235): "Hidden Sphere, To Name It"
隠し玉 名付けて…！

2007-05-31
Shippuuden 016 (236): "Secret of the Jinchuuriki"
人柱力の秘密

2007-06-07
Shippuuden 017 (236): "Gaara Dies"
我愛羅死す！