Adapt configuration group names to Yii conventions

[vjik]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	✔️
Fixed issues	https://github.com/yiisoft/app/issues/271

[codecov[bot]]

Codecov Report

Base: 99.37% // Head: 99.49% // Increases project coverage by +0.12% :tada:

Coverage data is based on head (e0bde3e) compared to base (c61a628). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #219 +/- ## ============================================ + Coverage 99.37% 99.49% +0.12% Complexity 304 304 ============================================ Files 19 19 Lines 794 793 -1 ============================================ Hits 789 789 + Misses 5 4 -1 ``` | [Impacted Files](https://codecov.io/gh/yiisoft/view/pull/219?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft) | Coverage Δ | | |---|---|---| | [src/ViewInterface.php](https://codecov.io/gh/yiisoft/view/pull/219?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft#diff-c3JjL1ZpZXdJbnRlcmZhY2UucGhw) | `0.00% <0.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft)

:umbrella: View full report at Codecov.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.