Translated "Forcing Cache"
[ja] Translated some headings
Fixed mistakes
Merge pull request #285 from inouet/patch-9

[ja] Translated some headings
Fixed mistakes
Merge pull request #284 from JimmDiGrizli/patch-10

Translated "Forcing Cache"
[ja] Translated headings of crypt.rst
[ja] Translated some headings
Merge pull request #287 from inouet/patch-10

[ja] Translated some headings
Translated "Caching PHQL Queries"
Merge pull request #288 from JimmDiGrizli/patch-11

Translated "Caching PHQL Queries"
Translated "Reusable Related Records"
Merge pull request #289 from JimmDiGrizli/patch-12

Translated "Reusable Related Records"
Translated "Caching Related Records"
Merge pull request #290 from JimmDiGrizli/patch-13

Translated "Caching Related Records"