Topic management

• 30897576 - Topic or Action with null Assignee does not appear in some OBIEE reports
  
• 32345049 - Add Topic Link is incorrectly displaying topics for which the user has View Topic permission
  
• 32345087 - Add Topic Link page download does not include first column
  
• 32345100 - Add Topic Link window is blank if the table includes any unassigned topic
  
• 32471775 - Add Topic Link table may display with already linked topics