Grid fails to size or resize properly if initially rendered hidden

fix on my side was to call the grid's init() method after it was made visible.

```
self.isInboxVisible.subscribe(function (newValue) {
if (newValue === true && !initializedgrid) {
initializedgrid = true;
ko.contextFor($('.koGrid').first().children()[0]).$data.init();
}

});
```

Start by tracing the grid's init() method and the koGrid instance shown in the issue, focusing on what happens when the grid is initially hidden. Reproduce the hidden-to-visible transition and verify that the grid sizes correctly on first display and resizes correctly afterward.

Written by the indexing model from the issue text.