Divide by 0 fix on Landing Pages

UnivateProperties_API/Repository/Campaigns/CampaignRepository.cs

 
             string tableItems = "<table align=center>";
             int rows;
+            if (campaign.ItemsPerRow == 0)
+                campaign.ItemsPerRow = 1;
             if (campaign.Items.Count % campaign.ItemsPerRow == 0)
             {
                 rows = campaign.Items.Count / campaign.ItemsPerRow;