Summary:
marginLeft(node, margin) -> margin(node, CSSEdgeLeft, margin)
This reduces the api surface of CSSLayout as well as puts the api more in line with the java version. This also adds support for CSSEdgeAll which java has had support for for a while. This also open up the possibility of doing margin(node, CSSEdgeLeft | CSSEdgeTop, margin) in the future.
Reviewed By: lucasr
Differential Revision: D3715201
fbshipit-source-id: ea81ed426f0f7853bb542355c01fc16ae4360238