ActiveRecord::tableName() hardcoded prefix fix
DbConnection::tablePrefix default value added
ActiveRecord::tableName() comment fixed
\yii\caching\DbCache updated
\yii\db\ActiveRecord updated
\yii\console\controllers\MigrateController updated
\yii\i18n\DbMessageSource updated
\yii\log\DbTarget updated
\yii\rbac\DbManager updated
\yii\web\DbSession updated
Fixed test break.
Merge pull request #1852 from creocoder/activerecord-tablename-prefix-fixes

[WIP] ActiveRecord::tableName() hardcoded prefix fix