bugfix typo mergefile: add image for non-blendmont maps (mrc)

pyEM.py

@@ -633,7 +633,7 @@ def mergemap(mapitem,crop=False,black=False,blendmont=True):
          
         else:
             im = mf.data
-            im = np.rot90(numpy.transpose(im),axes=(0,1))
+            im = numpy.rot90(numpy.transpose(im),axes=(0,1))