Fixes #5682: The `asset` command would incorrectly combine CSS files when `UrlManager::linkAssets` is true

API is not finished.

issue #5082

Fixed `yii\console\controllers\AssetController` breaks CSS URLs in case target file localed at `yii\web\AssetManager::basePath` root

issue #746

Added `yii\console\Controller::EXIT_CODE_NORMAL` and `yii\console\Controller::EXIT_CODE_ERROR` constants, `yii\console\MigrateController` now returns `yii\console\Controller::EXIT_CODE_ERROR` in case of failed migration

`yii\console\controllers\AssetController::actionTemplate()` advanced to include `jsCompressor` and `cssCompressor` to the template.

issue #2852

this term is resolveable by the php docs when linking types in apidoc