Added /postback on the end of postbackUrl.

services/git-bridge/src/uk/ac/ic/wlgitbridge/writelatex/WLDirectoryNodeSnapshot.java

@@ -35,7 +35,7 @@ public class WLDirectoryNodeSnapshot implements CandidateSnapshot {
         JsonObject jsonObject = new JsonObject();
         jsonObject.addProperty("latestVerId", previousVersionID);
         jsonObject.add("files", getFilesAsJson());
-        jsonObject.addProperty("postbackUrl", projectURL + "/" + postbackKey);
+        jsonObject.addProperty("postbackUrl", projectURL + "/" + postbackKey + "/postback");
         System.out.println(jsonObject);
         return jsonObject;
     }

services/git-bridge/src/uk/ac/ic/wlgitbridge/writelatex/WriteLatexAPI.java

@@ -16,10 +16,7 @@ import uk.ac.ic.wlgitbridge.writelatex.api.request.push.exception.SnapshotPostEx
 import uk.ac.ic.wlgitbridge.writelatex.model.WLDataModel;
 
 import java.io.IOException;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
-import java.util.concurrent.locks.Lock;
 
 /**
  * Created by Winston on 16/11/14.
@@ -28,13 +25,11 @@ public class WriteLatexAPI implements WriteLatexDataSource {
 
     private final WLDataModel dataModel;
     private final PostbackManager postbackManager;
-    private final Map<String, Lock> projectLocks;
     private final ProjectLock mainProjectLock;
 
     public WriteLatexAPI(WLDataModel dataModel) {
         this.dataModel = dataModel;
         postbackManager = new PostbackManager();
-        projectLocks = new HashMap<String, Lock>();
         mainProjectLock = new ProjectLock();
     }