Fixed import of dnsdata.

Code/Mantid/Framework/PythonInterface/plugins/algorithms/LoadDNSLegacy.py

@@ -3,7 +3,11 @@ from mantid.api import *
 import mantid.simpleapi as api
 import numpy as np
 
+import os, sys
+
+sys.path.insert(0, os.path.dirname(__file__))
 from dnsdata import DNSdata
+sys.path.pop(0)
 
 class LoadDNSLegacy(PythonAlgorithm):
     """