Improvements to FeedEx table view

Long referring URLs (eg from Google) break the layout of the FeedEx results table. This fix addresses only this issue and is a stop-gap until the results page can be redesigned.

Before:

![image](https://cloud.githubusercontent.com/assets/23801/4111422/6d6d78a0-3208-11e4-89b8-a43d5c0c741b.png)

After:

![image](https://cloud.githubusercontent.com/assets/23801/4111423/72d8c218-3208-11e4-8e3d-8ca9135aa380.png)

/cc @fofr 

I got the idea from [this article](http://ericsaupe.com/custom-column-widths-in-bootstrap-tables/) and it appears to work.