Added basic webui (layout from l-n-s).

core/util/HTTP.h

@@ -31,10 +31,13 @@ public:
      */
     std::string getHeader(const std::string& name) const;
 
+    std::string getContent() const;
+
 private:
     std::string method;
     std::string uri;
     std::string host;
+    std::string content;
     int port;
     std::map<std::string, std::string> headers;
 };