improved function naming

src/main/java/org/cryptomator/ui/mainwindow/VaultListController.java

@@ -20,7 +20,6 @@ import javafx.beans.property.SimpleBooleanProperty;
 import javafx.beans.value.ObservableValue;
 import javafx.collections.ListChangeListener;
 import javafx.collections.ObservableList;
-import javafx.event.Event;
 import javafx.fxml.FXML;
 import javafx.geometry.Side;
 import javafx.scene.control.Button;
@@ -147,7 +146,7 @@ public class VaultListController implements FxController {
 	}
 
 	@FXML
-	private void showMenu() {
+	private void toggleMenu() {
 		if (addVaultContextMenu.isShowing()) {
 			addVaultContextMenu.hide();
 		} else {

src/main/resources/fxml/vault_list.fxml

@@ -28,7 +28,7 @@
 				<Arc VBox.vgrow="NEVER" styleClass="onboarding-overlay-arc" type="OPEN" centerX="50" centerY="0" radiusY="100" radiusX="50" startAngle="0" length="-60" strokeWidth="1"/>
 			</VBox>
 		</StackPane>
-		<Button fx:id="addVaultBtn" onAction="#showMenu" styleClass="toolbar-button" text="%main.vaultlist.addVaultBtn" alignment="BASELINE_CENTER" maxWidth="Infinity" contentDisplay="RIGHT">
+		<Button fx:id="addVaultBtn" onAction="#toggleMenu" styleClass="toolbar-button" text="%main.vaultlist.addVaultBtn" alignment="BASELINE_CENTER" maxWidth="Infinity" contentDisplay="RIGHT">
 			<graphic>
 				<FontAwesome5IconView glyph="CARET_DOWN"/>
 			</graphic>