[ja] Translated some headings
Translated "Caching Resultsets"
Merge pull request #282 from JimmDiGrizli/patch-8

Translated "Caching Resultsets"
Translated "Overriding find/findFirst"
Merge pull request #283 from JimmDiGrizli/patch-9

Translated "Overriding find/findFirst"
Merge pull request #281 from inouet/patch-8

[ja] Translated some headings