ariatemplates/hashspace — pull request #120 by b-laporte (2014-04-05 10:42:12+00:00)
Title: fix default attribute elt determination algorithm

This PR fixes the algorithm that is used to determine if the default attribute element must be used (i.e. created) when passing content to a component.

As an example:
```
// in this case the default <@body> element will be automatically created
<#panel head="Panel B ({m.text}!)">
{m.text}! Update model

// here it is present, so no need to create it
<#panel head="Panel B ({m.text}!)">
<@body>
{m.text}! Update model

// and the previous algorithm had a bug in this case
<#panel head="Panel B ({m.text}!)">
{m.text}!

Update model

```