Dev/datapath handle all structs

Implementation of #102 (closed)

Might still need some more adjustment of comments and documentation

+PlotID/@dataPath/dataPath.m

@@ -66,7 +66,7 @@ classdef dataPath < handle
         
         function cleanTmpFile(obj)
             if ~isempty(obj.tmpPath)
-                delete(obj.tmpPath); 
+                delete(obj.tmpPath{:}); 
             end
         end