allow to select multi folder to load

closes #74 (closed)

User can use cmd/ctrl + click to select multi folders to load data or detect channels in Channel Preferences Dialog

sohstationviewer/view/channel_prefer_dialog.py

@@ -394,7 +394,7 @@ class ChannelPreferDialog(OneWindowAtATimeDialog):
     @QtCore.Slot()
     def scan_channels(self):
         """
-        Scan for all available channels in folder self.list_of_dir to add to
+        Scan for all available channels in self.list_of_dir to add to
             preferred channel list.
         For RT130, all SOH channels are kept in a log file. It will be more
             reasonable to get channels from DB because the task of getting