Typo in doc [skip ci]

to avoid producing different results on different file systems
-> better diffs

helps reducing weird error messages.

Changed label for gii generated form [skip ci]

Code style ultra-minimum-fix [skip ci]

fixes #775

fixes #774

Fix function argument

```php
normalizeItems($items, &$active)
```
Qiang use 
```php
$items[$i]['items'] = $this->normalizeItems($item['items'], $route, $hasActiveChild);
```
So $hasActiveChild not assign value and parent item not set activated

Plz, review and approval

Thanks

GroupDependency::generateDependencyData typo fix