Added failing test for #2209
fixed configs
Merge pull request #2371 from Ragazzo/fixed_advanced_app_configs

fixed configs
The missing Component.php tests
Added missing Object.php unit tests for 100% code coverage
Merge branch 'master'
Revert "fixed configs"

This reverts commit c94131b875f81c71a6f2e5e63c5ef08ea47b51ad.
cs fix [skip ci]
Fixes #2209: When I18N message translation is missing source language is now used for formatting
fixed validation message translation [skip ci]
Added assignment back. See https://github.com/yiisoft/yii2/pull/2285#discussion_r9566711
Merge pull request #2285 from yiisoft/missing-translation-formatting

When translation is missing source language should be used for formatting
Changed Exception wording to be more clear
Merge pull request #2374 from mintao/master

Some missing base unit tests