[ja] Fix #453 review results
Merge pull request #1012 from suzuki/feature/ja-fix-453-reviewed

[ja] Fix #453 review results and follow #1010
[ja] Follow #498
[ja] delete tailing whitespace
Fix code block markup
[ja] Follow #829
[fr] Follow #1007

Added portability note for test.php
[fr] Follow #1010

Fix Check permissions description.
Shows how to access new created data in the afterSave method

I was looking for this info and found the book a little dry so a ran a simple test. Only proposing changes to the english docs. May want to notify other languages.
[fr] Follow bc3be19a50d5829831cc9adfc3e935a7a5119791

Shows how to access new created data in the afterSave method