Extend use of AddParameter() extension

Previously, `AddParameter()` wasn't used with either `PersistRelations()` (due to an oversight) or `DataTable` types (due to lack of support). With 0cd2506, the latter is now supported. This is now implemented across the board, providing more consistency in how we work with parameters.

Author: JeremyCaney

OnTopic.Data.Sql/SqlTopicRepository.cs

@@ -446,7 +446,7 @@ SqlDateTime version
       }
       command.AddParameter("Version", version.Value);
       command.AddParameter("ExtendedAttributes", extendedAttributes);
-      command.Parameters.AddWithValue("@Attributes", attributeValues);
+      command.AddParameter("Attributes", attributeValues);
       command.AddOutputParameter();
 
       /*------------------------------------------------------------------------------------------------------------------------
@@ -667,9 +667,9 @@ private static void PersistRelations(Topic topic, SqlConnection connection) {
           }
 
           // Add Parameters
-          command.Parameters.AddWithValue("TopicID", topicId);
-          command.Parameters.AddWithValue("RelationshipKey", key);
-          command.Parameters.AddWithValue("RelatedTopics", targetIds);
+          command.AddParameter("TopicID", topicId);
+          command.AddParameter("RelationshipKey", key);
+          command.AddParameter("RelatedTopics", targetIds);
 
           command.ExecuteNonQuery();