Allow setting up a proxy folder path with qBittorrent. Fixes #377.

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 == BitTorrent || type == uTorrent || type == Dummy;
+		return type == rTorrent || type == Tfb4rt || type == Bitflu || type == Deluge || type == Transmission || type == BitTorrent || type == uTorrent || type == qBittorrent || type == Dummy;
 	}
 
 	public static boolean supportsSetTransferRates(Daemon type) {

app/src/main/java/org/transdroid/daemon/Qbittorrent/QbittorrentAdapter.java

@@ -415,7 +415,12 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 	 * @return The URL to request
 	 */
 	private String buildWebUIUrl(String path) {
-		return (settings.getSsl() ? "https://" : "http://") + settings.getAddress() + ":" + settings.getPort() + path;
+		String proxyFolder = settings.getFolder();
+		if (proxyFolder == null)
+			proxyFolder = "";
+		else if (proxyFolder.endsWith("/"))
+			proxyFolder = proxyFolder.substring(0, proxyFolder.length() - 1);
+		return (settings.getSsl() ? "https://" : "http://") + settings.getAddress() + ":" + settings.getPort() + proxyFolder + path;
 	}
 
 	private TorrentDetails parseJsonTorrentDetails(JSONArray messages) throws JSONException {