Bump to Lucene 5.2.1

Luca Milanesio

2015-09-09 e618eb051246e7941dc2964a5038587c9d45d1d2

 src/main/java/com/gitblit/manager/GitblitManager.java

@@ -662,6 +662,11 @@
   }

   @Override
   public UserModel authenticate(String username) {
      return authenticationManager.authenticate(username);
   }

   @Override
   public UserModel authenticate(HttpServletRequest httpRequest, boolean requiresCertificate) {
      UserModel user = authenticationManager.authenticate(httpRequest, requiresCertificate);
      if (user == null) {