Fixes #16 : players can be used in multiple positions

app/src/main/java/net/pokeranalytics/android/ui/modules/handhistory/model/HandHistoryViewModel.kt

@@ -965,6 +965,13 @@ class HandHistoryViewModel : ViewModel(), RowRepresentableDataSource, CardCentra
 	 * Defines the [player] at the saved [tappedPlayerPositionIndex]
 	 */
 	fun playerSelected(player: Player) {
+
+		// Remove all use of the selected player
+		this.handHistory.playerSetups.filter { it.player == player }.forEach {
+			it.player = null
+		}
+
+		// Affects the player to the selected position
 		this.tappedPlayerPositionIndex?.let { positionIndex ->
 			player.realm.executeTransaction {
 				val ps = this.handHistory.playerSetupForPosition(positionIndex) ?: this.handHistory.createPlayerSetup(positionIndex)