Added phpdoc for ContentDecorator
add more default names of exceptions
Added phpdoc for Block
Fixes #5770: Added more PHP error names for `ErrorException`
Merge branch 'master' of git://github.com/yiisoft/yii2
Fixes #5833: The `message` command fails with a FK constraint error when trying to update messages
added tipp for asset registering
Update yii.php
Fixes #5836: doc fixes.
Merge pull request #5837 from ahmadrusli/patch-3

Update yii.php
avoid test break.
Merge branch 'master' of git://github.com/yiisoft/yii2
renamed $object to $model
fixed test break due to smarty error.
build break fix.
fixed test break.
Grammatical errors and typos fixes
cleaning some extra space.

close #5838
spanish guide translation

close #5840
docs/guide-ja/structure-controllers.md added [ci skip]