svn: Fix slowing down commit issue

The buffer was not used when reading the svn committed files.
That was the reason for slowing down commit.

See: Yona Github issue #301

app/utils/PlayServletRequest.java

@@ -144,7 +144,7 @@ public ServletInputStream getInputStream() throws IOException {
                 // BodyParser.of annotation at SvnApp.service() method.
                 throw new IOException("Request entity is too large.");
             }
-            in = new FileInputStream(file);
+            in = new BufferedInputStream(new FileInputStream(file));
         }
 
         return new ServletInputStream() {