Servlet, Filter and Listener are moved to 'servlet' package from 'util'

package.

src/main/scala/servlet/GitRepositoryServlet.scala

@@ -0,0 +1,37 @@
+package servlet
+
+import java.io._
+import javax.servlet._
+import javax.servlet.http._
+import org.eclipse.jgit.http.server.GitServlet
+import org.slf4j.LoggerFactory
+import util.Directory
+
+/**
+ * Provides Git repository via HTTP.
+ * 
+ * This servlet provides only Git repository functionality.
+ * Authentication is provided by [[app.BasicAuthenticationFilter]].
+ */
+class GitRepositoryServlet extends GitServlet {
+
+  private val logger = LoggerFactory.getLogger(classOf[GitRepositoryServlet])
+  
+  // TODO are there any other ways...?
+  override def init(config: ServletConfig): Unit = {
+    super.init(new ServletConfig(){
+      def getInitParameter(name: String): String = name match {
+        case "base-path"  => Directory.RepositoryHome
+        case "export-all" => "true"
+        case name => config.getInitParameter(name)
+      }
+      def getInitParameterNames(): java.util.Enumeration[String] = {
+        config.getInitParameterNames
+      }
+      
+      def getServletContext(): ServletContext = config.getServletContext
+      def getServletName(): String = config.getServletName
+    });
+  }
+  
+}