Import Netlist Report.txt needs to be all ascii (lp:#1797449)

Original report created by Robert (robee)

When importing the netlist from schematic to layout, the log can be saved
to "report.txt".  This "text" file uses what I can only assume to be
unicode quotation marks ("), making the file challenging to read using a
standard text editor such as Vim.  Please fix this text file so that it is
really just a text file, I don't see any advantage to the way it is now.

Original tags: pcbnew