Description of problem:
When editing a role, entering a very long string for role description returns a cryptic error message

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


How reproducible:


Steps to Reproduce:
1.  Create a new role, "New Role"
2.  From roles view, select "New Role"
3.  Click the "Edit Role" button
4.  For role description, enter the following text into the textbox:

This is a very long description This is a very long description This is a very long description This is a very long description This is a very long description This is a very long description This is a very long description This is a very long description This is a very long description This is a very long description 
  
Actual results:
Error message that reads
[object Object]

Expected results:
* Contextual error message
* Perhaps a hard limit in the text field for amount of text that can be entered?

Additional info: