Adding HTML5 autofocus to search bar, CSS improvement

Adding HTML5 autofocus to search bar + tiny CSS improvement
Add ja/development/exceptions
Fixed all the following which okonomi pointed out.
- "400番台" is correct.
- All CakeExceptions and HttpExceptions above extend this class.
  This line is not needed.
- "継承しており" is correct.
Added info about new 'currentTag' option for PaginatorHelper::numbers()
Fix typo
Translate REST page in Japanese
Merge pull request #407 from ichikaway/REST-ja

Translate REST page in Japanese
Fix indent and clean up code directives
adding isset for beforesave password hashing
Merge pull request #408 from andraskende/master

adding isset for beforesave password hashing
CakeEmail and CLI
Merge pull request #409 from dereuromark/email-cli

CakeEmail and CLI
Fix underlines, code highlighting and small wording changes
Translations of french doc

End of translation !
Small changes in fr docs
Translations of french doc

End of translation !
Small changes in fr docs
rebase from real34
Small mistake with addArguments() in shells
translated 'testing' section from top to 'Test Case Conventions'
	new file:   ja/development/testing.rst