Full symbol support on server

Fix #496

gns3server/controller/symbols.py

@@ -54,7 +54,7 @@ class Symbols:
                     'filename': file,
                     'builtin': False,
                 })
-                self._symbols_path[symbol_id] = os.path.join(get_resource("symbols"), file)
+                self._symbols_path[symbol_id] = os.path.join(directory, file)
 
         symbols.sort(key=lambda x: x["filename"])
 

gns3server/handlers/api/controller/symbol_handler.py

@@ -68,5 +68,6 @@ class SymbolHandler:
                 if not packet:
                     break
                 f.write(packet)
+        # Reset the symbol list
+        controller.symbols.list()
         response.set_status(204)
-