Use doxygen-awesome theme (#1214)

For #889

src/web/interface/ConnectionBase.hpp

@@ -80,11 +80,11 @@ public:
     /**
      * @brief Send via shared_ptr of string, that enables SubscriptionManager to publish to clients.
      *
-     * @param msg The message to send
-     * @throws Not supported unless implemented in child classes. Will always throw std::logic_error.
+     * @param msg Unused
+     * @throws std::logic_error unless the function is overridden by a child class.
      */
     virtual void
-    send(std::shared_ptr<std::string> /* msg */)
+    send([[maybe_unused]] std::shared_ptr<std::string> msg)
     {
         throw std::logic_error("web server can not send the shared payload");
     }