fix bug in check run selection and add small space between buttons

src/main/java/org/cryptomator/ui/health/CheckListCellController.java

@@ -1,7 +1,6 @@
 package org.cryptomator.ui.health;
 
 import com.tobiasdiez.easybind.EasyBind;
-import com.tobiasdiez.easybind.Subscription;
 import org.cryptomator.ui.common.FxController;
 
 import javax.inject.Inject;
@@ -9,8 +8,6 @@ import javafx.beans.binding.Binding;
 import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.SimpleObjectProperty;
 import javafx.scene.control.CheckBox;
-import java.util.ArrayList;
-import java.util.List;
 
 public class CheckListCellController implements FxController {
 
@@ -18,7 +15,6 @@ public class CheckListCellController implements FxController {
 	private final ObjectProperty<Check> check;
 	private final Binding<String> checkName;
 	private final Binding<Boolean> checkRunnable;
-	private final List<Subscription> subscriptions;
 
 	/* FXML */
 	public CheckBox forRunSelectedCheckBox;
@@ -28,16 +24,14 @@ public class CheckListCellController implements FxController {
 		check = new SimpleObjectProperty<>();
 		checkRunnable = EasyBind.wrapNullable(check).mapObservable(Check::stateProperty).map(Check.CheckState.RUNNABLE::equals).orElse(false);
 		checkName = EasyBind.wrapNullable(check).map(Check::getName).orElse("");
-		subscriptions = new ArrayList<>();
 	}
 
 	public void initialize() {
-		subscriptions.add(EasyBind.subscribe(check, c -> {
-			forRunSelectedCheckBox.selectedProperty().unbind();
-			if (c != null) {
-				forRunSelectedCheckBox.selectedProperty().bindBidirectional(c.chosenForExecutionProperty());
+		forRunSelectedCheckBox.selectedProperty().addListener((observable, wasSelected, isSelected) -> {
+			if (check.get() != null) {
+				check.get().chosenForExecutionProperty().set(isSelected);
 			}
-		}));
+		});
 	}
 
 	public ObjectProperty<Check> checkProperty() {

src/main/resources/fxml/health_check_list.fxml

@@ -10,6 +10,7 @@
 <?import javafx.scene.layout.StackPane?>
 <?import javafx.scene.layout.VBox?>
 <?import java.lang.Integer?>
+<?import javafx.scene.layout.Region?>
 <VBox xmlns:fx="http://javafx.com/fxml"
 	  xmlns="http://javafx.com/javafx"
 	  fx:controller="org.cryptomator.ui.health.CheckListController"
@@ -29,6 +30,7 @@
 				<Label text="%health.checkList.description" wrapText="true"/>
 				<HBox alignment="CENTER">
 					<Button onAction="#selectAllChecks" text="%health.checkList.selectAllButton" />
+					<Region prefWidth="6"/>
 					<Button onAction="#deselectAllChecks" text="%health.checkList.deselectAllButton" />
 				</HBox>
 			</VBox>