After deleting a poll question, polls display is blank

• Type: Regression Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 6.1.0 CE RC1
• Fix Version/s: --Sprint 12/11, 6.1.0 CE RC1
• Component/s: Social Networking > Polls
• Labels: None
• Environment: Tomcat 7.0.21 + MySQL 5. 6.1.x Revision 92455.
• Caused by: Feature/improvement was not complete
• Where was the bug?:
  Java
• Similar Issues: Show 5 results ; ;

  LPS-6265	Can't add a Polls question
  LPS-34439	Not possible to delete an option from the poll
  LPS-16920	Export/Importing an expired poll question causes the whole import process to fail
  LPS-16339	Poll and question are not associated after remote publishing
  LPS-5456	"Expiration" doesn't work in Polls portlet.

Steps to reproduce:
1. Add page
2. Add polls display portlet to page (notice the portlet, see "before" attachment)
3. Navigate to Control Panel > Polls > Add Question
4. Navigate to Polls Display portlet > Options > Configuration > select the question
5. Assert the question shows in the portlet
6. Navigate to Control Panel > Polls > Actions > Delete poll question
7. Navigate to Polls Display portlet (notice the portlet now, see "after" attachment)