Add some more fingerprints that a commercial tool just found in an application I'm assessing.

I realize we're getting too many fingerprints to handle, but we can always trim it down later.

nselib/data/http-fingerprints

@@ -119,3 +119,14 @@
 # Ruby on Rails
 /images/rails.png
 
+# Private
+/private/
+/_private/
+
+# Public
+/public/
+/_public/
+/pub/
+
+# Classes
+/classes/