Inspect not defined

Hi, when I try the "Templates Inspection" I get this error:

```
Exception from Deps recompute: ReferenceError: Inspect is not defined
    at Template.observatoryjsInternalsTab.helpers.templates
```

Happens in this file: https://github.com/jhoxray/observatory/blob/967d394a53b7c7181d3fb50fe5e035d41a67275c/mars/observatoryTemplates.coffee#L255

Is the `Inspect` object something from a package?
