Process widget id as symbol in toString

If we call toString on Symbol we still have quotes or backticks in case
it's called from ruby gui. Processing them separately resolves the need
in additional conversion.

src/YCPValueWidgetID.cc

@@ -69,6 +69,9 @@ YCPValueWidgetID::isEqual( YWidgetID * otherID ) const
 string
 YCPValueWidgetID::toString() const
 {
+    // If value is Symbol - get symbol
+    if ( _value->isSymbol() ) return _value->asSymbol()->symbol();
+    // Else return as string
     return _value->toString();
 }
 
@@ -78,4 +81,3 @@ YCPValueWidgetID::value() const
 {
     return _value;
 }
-