Added wrapper classes for spell checker so new libraries can be added

nw/config.py

@@ -35,6 +35,7 @@ class Config:
         self.showGUI   = True
         self.debugGUI  = False
         self.debugInfo = False
+        self.spellTool = None
 
         # Set Paths
         self.confPath  = None
@@ -124,6 +125,11 @@ class Config:
             # If it does not exist, save a copy of the defaults
             self.saveConfig()
 
+        if self.spellTool is None:
+            logger.warning("No spell check tool available")
+        else:
+            logger.debug("Using spell check tool '%s'" % self.spellTool)
+
         return True
 
     def loadConfig(self):