[0.9.4] Nested dom-if templates show invalid content

[Sleeckx]

Consider the following case: http://jsbin.com/biquxakiqi/1/edit?html,output

After clicking the steps one by one, you will see that WORLD is shown even though the value of the world property, used in the inner dom-if template, is still false.

Result (tested on Chrome):

Adding restamp to the inner dom-if template fixes the issue, as seen in this sample: http://jsbin.com/ducakepone/1/edit?html,output

[kevinpschaaf]

Will be resolved in PR #1635.
http://jsbin.com/miyaquwide/1/edit?html,output