{{root}} helper doesn't work as intended in all situations

It seems that Panini specific helper {{root}} doesn't always work as intended.

Take this folder structure for example:
```
/site/
|-data/
|-galery.yml
|-pages/
|-en/
|-test_page.html
```

Data galery.yml is just a list of image URL's

If I use {{root}} from withing an article located in /pages/en/test-page.com and if I don't wrap it in some other Panini helpers - it will work as intended, but if I use it like this

`{{#each galery.team }}

Image root: {{root}}

It will not work at all.