Adding HTML5 autofocus to search bar, CSS improvement

Adding HTML5 autofocus to search bar + tiny CSS improvement
translated 'testing' section from top to 'Test Case Conventions'
	new file:   ja/development/testing.rst
translated 'testing' from top to 'Creating Your First Test Case'
translated all titles of 'testing'
translated from top to 'Test Case Lifecycle Callback'
translated 'testing' from top to 'Dynamic data and fixtures'
translated 'testing' from head section to Fixtures section
translated 'testing' from head seciton to 'Model Testing' section and 'Creating Test Suite' section
translated 'testing' without 'Controllers testing', 'Helpers testing' and 'Components testing' sections
translated some subsections of 'Testing Controllers' in 'testing'
Update ja/development/testing.rst

just a little modify and shorten many lines' length
Update ja/development/testing.rst

transle 'testing' section in Japanese without 'Controller Testing'
Almost Translated!

Translated Almost 'Testing' section without 'More complex examples.'
Update docs for blocks.
Add content about creating custom view classes.
Fix indentation.
Update docs for new feature.
Merge pull request #400 from powtac/master

Adding HTML5 autofocus to search bar + CSS improvement
translated testing section in Japanese

テストの項目を日本語に翻訳しました。
Update docs for PaginatorHelper::prev() and PaginatorHelper::next().