Validation doesn't work for User Segment and Campaign Display portlet configuration

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 2.x
• Fix Version/s: 2.x, 2.0
• Component/s: Content Targeting
• Labels: None
• Fix Priority: 5
• Git Pull Request: https://github.com/liferay/liferay-apps-content-targeting-ee/pull/84

Steps:

1. Add a user segment, campaign, web content article, and user segment content display portlet (uscd)
2. Configure the uscd and do something illegal like selecting a content but no user seg/campaign. Or select otherwise panel and click the radio button to display content, but don't select the content.
3. Save the configuration and assert there is a success message
4. This should fail with a validation error
5. In some cases it will save successfully and display nothing with a preview
   Console error

   23:08:59,368 ERROR [liferay/analytics-16][JDBCExceptionReporter:234] Duplicate entry '32560-32601' for key 'IX_DC6100CC'
   

Reproduced on:
Tomcat 8.0.32 + MariaDB 10.0. Content Targeting 2.x RC3. Portal master GIT ID: 70d07e83240e79e79106411573febe342600ea86.