Add rule to avoid having both ante and BB ante at the same time

app/src/main/java/net/pokeranalytics/android/model/realm/handhistory/HandHistory.kt

@@ -78,11 +78,19 @@ open class HandHistory : RealmObject(), Deletable, RowRepresentable, Identifiabl
 	 * The ante
 	 */
 	var ante: Double = 0.0
+		set(value) {
+			field = value
+			this.bigBlindAnte = false
+		}
 
 	/***
 	 * Big blind ante
 	 */
 	var bigBlindAnte: Boolean = false
+		set(value) {
+			field = value
+			this.ante = 0.0
+		}
 
 	/***
 	 * Number of players in the hand