Wrong mapping for ${TrgLang} in Rainbow

[Former user]

Original [issue 88](https://code.google.com/p/okapi/issues/detail?id=88) created by @ysavourel on 2009-07-08T20:34:53.000Z:

In the Output settings for Rainbow the variable ${TrgLang} and other target variable are mapped to the encoding rather than the language.

[Former user]

Comment [1.](https://code.google.com/p/okapi/issues/detail?id=88#c1) originally posted by @ysavourel on 2009-07-20T11:57:22.000Z:

This occurs only depending on some of the options like when replace text is one.

[Former user]

Comment [2.](https://code.google.com/p/okapi/issues/detail?id=88#c2) originally posted by @ysavourel on 2009-07-20T11:58:52.000Z:

Fixed.