Fix 2414566 : Capitalizing first letter in unexpected fields.

Also move some symbols around as per yaks' request.
diff --git a/res/xml/kbd_symbols.xml b/res/xml/kbd_symbols.xml
index 067932b..ede7b50 100755
--- a/res/xml/kbd_symbols.xml
+++ b/res/xml/kbd_symbols.xml
@@ -77,7 +77,7 @@
         />
         <Key android:codes="45" android:keyLabel="-"
                 android:popupKeyboard="@xml/kbd_popup_template"
-                android:popupCharacters="–—"
+                android:popupCharacters="_–—"
         />
         <Key android:keyLabel="+"
                 android:popupKeyboard="@xml/kbd_popup_template"