Bring URL field back to full view mode of links.

#6365 

This PR reverts the work from #6070 and also makes the URL links in the LOP widget to be plain text in "full" view mode. 

Before:
![selection_347](https://cloud.githubusercontent.com/assets/4497748/3534719/f4778170-07f0-11e4-885f-bd0bfc545d6e.png)

After:
![selection_346](https://cloud.githubusercontent.com/assets/4497748/3534720/f9c668bc-07f0-11e4-88ff-27dd3177eafa.png)

Note that the approach of attaching a class and solving this with CSS was taken after a few other tries that didn't went well.