make fenrir key configurable

config/settings/settings.conf.1

@@ -0,0 +1,39 @@
+[sound]
+enabled=True
+driver=sox
+theme=default
+volume=1.0
+
+[speech]
+enabled=True
+driver=espeak
+rate=0.75
+pitch=0.5
+module=espeak
+voice=en-us
+language=en-us
+volume=1.0
+autoReadIncomming=True
+
+[braille]
+enabled=False
+layout=en
+
+[screen]
+driver=linux
+screenUpdateDelay=0.4
+
+[keyboard]
+device=all
+grabDevices=True
+ignoreShortcuts=False
+keyboardLayout=desktop
+charEcho=False
+charDeleteEcho=True
+wordEcho=True
+interruptOnKeyPress=False
+
+[general]
+debugLevel=0
+punctuationLevel=1
+fenrirKeys=KEY_KP0