Fixes #1669: CNumberValidator used to add wrong error messages in case non-numeric values being validated.
Merge pull request #2286 from resurtm/fixes-1669-CNumberValidator

Fixes #1669: CNumberValidator used to add wrong error messages in case non-numeric values being validated.
read <-> write
Merge pull request #2287 from softark/docs-ja

read <-> write flip/flop
docs/guide/ja updated
Merge pull request #2288 from softark/docs-ja

docs/guide/ja updated
Fixes #2283: Gii Model Generator's tooltips are not working and always invisible.
Merge branch 'master' of github.com:yiisoft/yii