added menu, added clear workspace function, buttons file now gui file

Signed-off-by: Victor Giers <vgiers@web.de>

build/application.linux-armv6hf/source/save_load.pde

@@ -23,17 +23,7 @@ void loadCSVFile(File selection) {
 }
 
 void loadCSV(String path) {
-  for (int i = 0; i < nodeCount; i++) {
-    //nodes[i].deleted = true;
-    i_selectedNode = i;
-    deleteSelectedNode();
-  }
-  nodeCount = 0;
-
-  for (int i = 0; i < linkCount; i++) {
-    links[i].active = false;
-  }
-  linkCount = 0;
+  deleteAll();
 
   String[] loadString = loadStrings(path);
   for (int i = 0; i < loadString.length-1; i++) {