BHV-11567 Fix missing semicolon

Issue
-------
Sometimes {{this.style}} has appended string which is composed with css properties. 
Usually It is parsed well but in specific case it return unexpected value due to missing semicolon

Cause
-------
{{layout()}} in {{VerticalGridDeleage.js}} missed semicolon when it compose string.
{code}
c.addStyles(
   ...	
   "height: " + Math.round(h) +  "px"
);
{code}

Fix
---
Add semicolon resolve it.

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com