enyojs/enyo — pull request #866 by aarontam (2014-09-27 00:55:07+00:00)
Title: BHV-15157: Prevent duplicate styles from being set before node is rendered in DOM.

### Issue
It is possible to set rules that involve the same CSS properties on a node before it has been attached to the DOM, resulting in duplicate rules being applied upon DOM attachment.

### Fix
We use a mechanism similar to what is used to remove existing rules, to detect an existing rule involving the same property, and overwrite it.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam