[ja] Add 存储/Storage to glossary.
[ja] Translate 06.2.md into Japanese.
[ja] Add 讲解/解説 to glossary.
[ja] Add 存储/保存する to glossary.
[ja] Translate 06.3.md into Japanese.
[ja] Add 2 words to the glossary.

嗅探/スニッフィング
劫持/ハイジャック
[ja] Translate 06.4.md into Japanese.