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Create start-forms.md
Merge pull request #5243 from Benn/patch-2

French start-forms.md
Обновление

Дополнение перевода
grammar fix

with help of ##English on freenode :)

fixes #5244
Обновление

Дополнение перевода
Перевод завершён
review install guide
added unit tests for #5249
Fixes #4275: Added `removeChildren()` to `yii\rbac\ManagerInterface` and implementations
Fixes #5088: new password reset token is now generated only if previous one was already used or expired
Added upgrade note about #4275
Update README directory structure [skip ci]