Add validation for item.name, only allow [a-zA-z-_]

lib/reroute_middleware.rb

@@ -9,7 +9,7 @@ class RerouteMiddleware
     #Rails.logger.debug env.to_yaml
     return @app.call(env) if env['REQUEST_URI'] =~ /^\/admin/
       
-    env['REQUEST_URI'] =~ /^\/([\w]*)/
+    env['REQUEST_URI'] =~ /^\/([a-zA-Z-_]*)/
     parsed_entry_name = $1
    
     entry = Item.find_by_name( parsed_entry_name )