Fixed slight clipping error

Text in windows previously ran closer to the edges of windows than, for example, CollapsingHeaders.  Now they both end at the same place.  This makes it look better, in my opinion.

Before: 
![before](https://cloud.githubusercontent.com/assets/4635095/3943032/991c94e4-2584-11e4-82ac-4829e68e95e3.PNG)

After: 
![after](https://cloud.githubusercontent.com/assets/4635095/3943033/9d19e34e-2584-11e4-8ead-235639ab86f5.PNG)