fixes #1289 by decoupling storage path from vault name

main/commons/src/main/java/org/cryptomator/common/settings/VaultSettings.java

@@ -70,7 +70,7 @@ public class VaultSettings {
 		if (!mountNameSet && dirnameExists) {
 			mountName.set(normalizeMountName(newPath.getFileName().toString()));
 		} else if (!mountNameSet && !dirnameExists) {
-			mountName.set(DEFAULT_MOUNT_NAME + id);
+			mountName.set(DEFAULT_MOUNT_NAME + " " +  id);
 		} else if (mountNameSet && dirnameExists) {
 			if (mountName.get().equals(DEFAULT_MOUNT_NAME + id)) {
 				//this is okay, since this function is only executed if the path changes (aka, the vault is created or added)

main/commons/src/main/java/org/cryptomator/common/vaults/Vault.java

@@ -78,7 +78,7 @@ public class Vault {
 		this.state = state;
 		this.lastKnownException = lastKnownException;
 		this.stats = stats;
-		this.displayableName = Bindings.createStringBinding(this::getDisplayableName, vaultSettings.path());
+		this.displayableName = Bindings.createStringBinding(this::getDisplayableName, vaultSettings.mountName());
 		this.displayablePath = Bindings.createStringBinding(this::getDisplayablePath, vaultSettings.path());
 		this.locked = Bindings.createBooleanBinding(this::isLocked, state);
 		this.processing = Bindings.createBooleanBinding(this::isProcessing, state);
@@ -230,8 +230,7 @@ public class Vault {
 	}
 
 	public String getDisplayableName() {
-		Path p = vaultSettings.path().get();
-		return p.getFileName().toString();
+		return vaultSettings.mountName().get();
 	}
 
 	public StringBinding accessPointProperty() {