Fixes ENYO-264

## Issue
The source/target of global bindings specified as strings (starting with '^') were being resolved to their value instead of the object.

## Fix
Split the string into the the path to the object and the property and then resolve the path to the object.

Enyo-DCO-1.1-Signed-off-by: Ryan Duffy <ryan.duffy@lge.com>