Added a ProgressDialog to show progress of file moves.
There is a bug where the final symlinking actions don't occur if the total filesize is too large. Going to switch to using number of files instead. I think this might look better anyway given other attributes of wxWidgets

Also made sure the program knows where to find the .config file (not using cwd)
Changed ProgressDialog to count number of files transferred rather than file size.
This resolves the issue with transferring large files (I think it may have been a C++ int size issue)

Added a taskbar icon