Long document names are not dealt with, and stretch outside the bounds of panels

Created attachment 913605
Screenshot of error

Description of problem:
If one uploads a document with filename of 255 characters, the string passes the right side boundary. See screenshot.

Version-Release number of selected component (if applicable):
3.4

How reproducible:
Easy always

Steps to Reproduce:
1. Create a txt file with a large filename
2. Upload to a document
3. Make the window narrow if necessary

Actual results:
Broken UI

Expected results:
Not broken UI

Additional info: