Description of problem:
For an HBAC rule, you can choose to add a Host in "Accessing" section. Now if you select to delete this without selecting this Host, an error is thrown as indicated in the attachment

Applies to Sudo page as well

Version-Release number of selected component (if applicable):
ipa-server-2.1.1-4.el6.x86_64


How reproducible:
always

Steps to Reproduce:
1. Add and edit HBAC rule
2. Go to its Accessing section, and click to Add a Host
3. Without choosing this Host, click on Delete

Actual results:
Error is thrown - select entries to be removed, with title - The page at <servername> says - (with a firefox icon)


Expected results:
Message is good, but should be an IPA error with a green title

Additional info: