Revert "Fixes #1856: The default CSS class for hint generated by `ActiveField` is changed to `help-block`"

This reverts commit 7ae4695d.

fixes #2099

fixes #2094

Just a minor PHPDocs change. In the advanced application there is no such thing as "app\models".

init of advanced application now allows to specify answer for overwriting files  via init --overwrite=n

Fixes #1937: Fixed wrong behavior or advanced app's `init --env` when called without parameter actually specified

fixes #1913

no need to download codeception via composer when phar is used.
fixes #1913

Removed error-block HTML class and related styles and used Bootstrap3 standard practice about errors instead

Fixes #1633: fixed scenarios for User model in advanced application allowing setting default values for User model

Advanced app template: moved database connection DSN, login and password to -local config not to expose it to VCS

1. It results in much smaller download and takes less disk space (25MB instead of 180MB for yii-basic + dependencies).
2. It requires less utilities to be installed (no VCS binaries required).
3. It takes less time to install dependencies.