server: correctly pass destinationPath to moveTorrents

Bug: #42

server/models/ClientRequest.js

@@ -249,7 +249,7 @@ class ClientRequest {
       let callback = () => {
         // empty initializer
       };
-      const destination = `${destinationPath}${path.sep}${filenames[index]}`;
+      const destination = path.join(destinationPath, filenames[index]);
       const isLastRequest = index + 1 === sourcePaths.length;
 
       if (isLastRequest) {

server/models/client.js

@@ -285,7 +285,7 @@ const client = {
       moveTorrentsRequest.moveTorrents({
         filenames,
         sourcePaths,
-        resolvedPath,
+        destinationPath: resolvedPath,
       });
     };