Update Sync Lib to not use "Array Pattern"

As discussed on the ML, http://lists.jboss.org/pipermail/aerogear-dev/2015-February/010947.html and http://lists.jboss.org/pipermail/aerogear-dev/2015-February/010894.html

we are eventually going to get rid of the current "Array Pattern", (perhaps "List Pattern sounds better").

This ticket is to refactor the Sync client lib that is yet to be released, for the alpha.1 Sync Server Release