orientation issue

[aaroncooper]

The library_plot.py scripts in here do a reversal of the begin and end dictionary values for parts, but this reversal also happens in the dnaplotlib module, so reversal gets reversed, if you will! I just commented out these lines from the library_plot.py script and all is well again. Seems like it'd be good to remove these, since the reversal is handled completely in the module?

if fwd == True:
	part_design['start'] = i
	part_design['end'] = i+1
else:
	part_design['end'] = i
	part_design['start'] = i+1