Fix forum inputboxes

The bootstrap 2.x vs. 3.x order seemed to have been switched with the new navbar.  Most items work well, but this is happening on all text fields of class "inputbox".  This small fix makes the text fit without inheriting the boostrap 3.x line-height property.

![image](https://cloud.githubusercontent.com/assets/6345473/4580790/e80f220e-4fd9-11e4-9bd5-006377aba8fe.png)