Added this.data_root and made use of this.data_updater's pathToNode and nodeToPath methods.
Added this.data_root and made use of this.data_updater's pathToNode and nodeToPath methods.

lddubeau/wed,lddubeau/wed,mangalam-research/wed,mangalam-research/wed,lddubeau/wed,lddubeau/wed,slattery/wed,mangalam-research/wed,mangalam-research/wed,slattery/wed,slattery/wed