.modx-console-text height:auto fix

...prevents console outline from striking through text:

*BEFORE:*
![modx_console_before](https://f.cloud.github.com/assets/352182/1818823/37a82694-7038-11e3-888b-063114b68c16.png)

*AFTER:*
![modx_console_after](https://f.cloud.github.com/assets/352182/1818824/43d76a6a-7038-11e3-8c0d-ef7782f4ce14.png)