correct a error link [skip ci]
Fixed entry script name
Merge pull request #5636 from ECDarwin/patch-1

correct a error link [skip ci]
updated guide about helpers

make sure to not confuse extending of helper classes with extensions.
Use "customizing" in this case and added note about when this should be done.
docs/internals-ja/versions.md updated
docs/guide-ja/intro-upgrade-from-v1.md added
Merge branch 'master' into docs-ja-2014-10-18
Merge pull request #5638 from softark/docs-ja-2014-10-18

Docs ja 2014 10 18
created stub documentation files for TDB sections

to avoid issues about 404 links in the guide
improved guide about using Yii in 3rd party systems
Added $auth = Yii::$app->authManager; to authorization guide to show where $auth is coming from
Fixes #5595: Better phpdoc value types for Formatter methods
update caching-fragment.md [skip ci]
Merge pull request #5640 from pana1990/guide-es

update caching-fragment.md [skip ci]
Fixes #5598: added ImageMagick with PNG and GD with FreeType checks to requirements of basic and advanced applications, used better Captcha exception message
update caching-overview.md [skip ci]
Updated version of fxp/composer-asset-plugin in installation guide after testing new version. It's faster!
Merge pull request #5641 from pana1990/guide-es

update caching-overview.md [skip ci]