Fixes #1082 Illegal mount options cannot be selected (WebDav + Windows)

By adding the visible and managed flags to the corresponding fxml tags, it is no longer possible to select illegal combinations.

main/ui/src/main/resources/fxml/vault_options_mount.fxml

@@ -30,7 +30,7 @@
 
 		<CheckBox fx:id="readOnlyCheckbox" text="%vaultOptions.mount.readonly"/>
 
-		<CheckBox fx:id="customMountFlagsCheckbox" text="%vaultOptions.mount.customMountFlags" onAction="#toggleUseCustomMountFlags"/>
+		<CheckBox fx:id="customMountFlagsCheckbox" text="%vaultOptions.mount.customMountFlags" onAction="#toggleUseCustomMountFlags" visible="${!controller.webDavAndWindows}" managed="${!controller.webDavAndWindows}"/>
 
 		<TextField fx:id="mountFlags" HBox.hgrow="ALWAYS" maxWidth="Infinity">
 			<VBox.margin>
@@ -48,7 +48,7 @@
 			<RadioButton toggleGroup="${mountPoint}" fx:id="mountPointWinDriveLetter" text="%vaultOptions.mount.mountPoint.driveLetter"/>
 			<ChoiceBox fx:id="driveLetterSelection" disable="${!mountPointWinDriveLetter.selected}"/>
 		</HBox>
-		<HBox spacing="6" alignment="CENTER_LEFT">
+		<HBox spacing="6" alignment="CENTER_LEFT" visible="${!controller.webDavAndWindows}" managed="${!controller.webDavAndWindows}">
 			<RadioButton toggleGroup="${mountPoint}" fx:id="mountPointCustomDir" text="%vaultOptions.mount.mountPoint.custom"/>
 			<Button text="%vaultOptions.mount.mountPoint.directoryPickerButton" onAction="#chooseCustomMountPoint" contentDisplay="LEFT" disable="${!mountPointCustomDir.selected}">
 				<graphic>
@@ -56,7 +56,7 @@
 				</graphic>
 			</Button>
 		</HBox>
-		<TextField text="${controller.customMountPath}" visible="${mountPointCustomDir.selected}" maxWidth="Infinity" disable="true">
+		<TextField text="${controller.customMountPath}" visible="${mountPointCustomDir.selected}" maxWidth="Infinity" disable="true" visible="${!controller.webDavAndWindows}" managed="${!controller.webDavAndWindows}">
 			<VBox.margin>
 				<Insets left="24"/>
 			</VBox.margin>