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

Fix typo

charset

Update caching.md

Update installation.md

Update apps-basic.md

Update apps-advanced.md

document roots and composer folder params

update path document root