Allow setting of a folder with uTorrent for reverse proxy setups. Folder comes before the fixed /gui. Fixes #277.

app/src/main/java/org/transdroid/daemon/Daemon.java

@@ -315,7 +315,7 @@ public enum Daemon {
 	}
 
 	public static boolean supportsCustomFolder(Daemon type) {
-		return type == rTorrent || type == Tfb4rt || type == Bitflu || type == Deluge || type == Transmission || type == Dummy;
+		return type == rTorrent || type == Tfb4rt || type == Bitflu || type == Deluge || type == Transmission || type == BitTorrent || type == uTorrent || type == Dummy;
 	}
 
 	public static boolean supportsSetTransferRates(Daemon type) {

app/src/main/java/org/transdroid/daemon/Utorrent/UtorrentAdapter.java

@@ -437,8 +437,16 @@ public class UtorrentAdapter implements IDaemonAdapter {
 	 * @return The URL of the RPC API
 	 */
 	private String buildWebUIUrl() {
-		return (settings.getSsl() ? "https://" : "http://") + settings.getAddress() + ":" + settings.getPort() +
-				"/gui/";
+		String folder = settings.getFolder() == null ? "" : settings.getFolder().trim();
+		if (!folder.startsWith("/")) {
+			// Add leading slash
+			folder = "/" + folder;
+		}
+		if (folder.endsWith("/")) {
+			// Strip trailing slash
+			folder = folder.substring(0, folder.length() - 1);
+		}
+		return (settings.getSsl() ? "https://" : "http://") + settings.getAddress().trim() + ":" + settings.getPort() + folder + "/gui/";
 	}
 
 	private TorrentStatus convertUtorrentStatus(int uStatus, boolean finished) {