Set encoding for all text reads and writes to utf8, as windows defaults to latin1

nw/gui/sessionlog.py

@@ -147,7 +147,7 @@ class GuiSessionLogView(QDialog):
 
         logger.debug("Loading session log file")
         try:
-            with open(logFile,mode="r") as inFile:
+            with open(logFile,mode="r",encoding="utf8") as inFile:
                 for inLine in inFile:
                     inData = inLine.split()
                     if len(inData) != 8:

nw/gui/winmain.py

@@ -390,7 +390,7 @@ class GuiMain(QMainWindow):
 
         theText = None
         try:
-            with open(loadFile,mode="rt") as inFile:
+            with open(loadFile,mode="rt",encoding="utf8") as inFile:
                 theText = inFile.read()
         except Exception as e:
             self.makeAlert(["Could not read file. The file cannot be a binary file.",str(e)], nwAlert.ERROR)