Rename the main_window class and UIC files to wireshark_main_window and
the MainWindow class to WiresharkMainWindow. Copy wireshark_main_window
/ WiresharkMainWindow to logwolf_main_window / LogwolfMainWindow.
Remove the Wireless menu from Logwolf.
Move WiresharkApplication.{cpp,h} to MainApplication.{cpp,h}. Add back
WiresharkApplication as a thin superclass of MainApplication, similar to
LogsharkApplication. Change all of our wsApp references to mainApp. We
will likely have to change many or most of them back, but that's a
commit for another time.