Absolute Positioning Inspector Panel

Added a new panel to the Inspector that allows for control positioning.

Enyo-DCO-1.1-Signed-off-by: Chris Patalano <christopher.patalano@lge.com>

@marian-debonis @yves-del-medico Marian and Yves - I know you're busy but if you have any space time it would be great if you can take a look at this. Some of the work that I did to edit position properties is very similar to what Marian did (taking css property changes and translating them into style property changes), so we can likely clean up the code at some point in the future. @kevinpschaaf will be reviewing the code as well, but it would be great to have your input. Thanks!