Bug 868345 - [system] 'What's in a crash report?' shown after crash not ...

...scrollable

Before: page not scrollable, title truncated

![2013-10-26-02-07-38](https://f.cloud.github.com/assets/1294206/1441181/bd05a682-41a7-11e3-9365-082f54a5dded.png)

After: page scrollable, more space for title
![2013-10-30-17-14-16](https://f.cloud.github.com/assets/1294206/1441231/9193a2a0-41a8-11e3-93f4-c8d3572a9358.png)