Resolves #343 GUI and Frame Refactor

Major rewrite of the GUI into a module and view form, also using a new Feed class. The frame and frameset data structures have also been rewritten to support memory pooling and response frames.

components/net/cpp/include/ftl/net/universe.hpp

@@ -85,6 +85,9 @@ class Universe : public ftl::Configurable {
 	 * @param addr URI giving protocol, interface and port
 	 */
 	Peer *connect(const std::string &addr);
+
+	bool isConnected(const ftl::URI &uri);
+	bool isConnected(const std::string &s);
 	
 	size_t numberOfPeers() const { return peers_.size(); }