fix potential bugs

scm-webapp/src/main/java/sonia/scm/api/rest/resources/RepositoryResource.java

@@ -220,13 +220,13 @@ public class RepositoryResource extends AbstractResource<Repository>
 
     String ctxPath = request.getContextPath();
 
-    url.append(ctxPath);
-
     if (ctxPath.endsWith("/"))
     {
       ctxPath = ctxPath.substring(0, ctxPath.length() - 1);
     }
 
+    url.append(ctxPath);
+
     RepositoryHandler handler =
       repositoryManager.getHandler(repository.getType());
 

scm-webapp/src/main/java/sonia/scm/plugin/WebResourceComparator.java

@@ -39,15 +39,23 @@ import sonia.scm.web.plugin.WebResource;
 
 //~--- JDK imports ------------------------------------------------------------
 
+import java.io.Serializable;
+
 import java.util.Comparator;
 
 /**
  *
  * @author Sebastian Sdorra
  */
-public class WebResourceComparator implements Comparator<WebResource>
+public class WebResourceComparator
+        implements Comparator<WebResource>, Serializable
 {
 
+  /** Field description */
+  private static final long serialVersionUID = -5916499507958881372L;
+
+  //~--- methods --------------------------------------------------------------
+
   /**
    * Method description
    *