SVGHMI: fix XY graph init (consequence of earlier change) + reindent

Earlier change did modify the variables attributes (options) are stored in widget objects. XY graph uses variables' min and max to determine range.

     1

from __future__ import absolute_import

     2

     3

from etherlab.etherlab import *

     4

from util.BitmapLibrary import AddBitmapFolder

     5

import util.paths as paths

     6

     7

AddBitmapFolder(os.path.join(paths.AbsDir(__file__), "images"))