src: improvements to logging

* log messages as they are sent and received
* log information about messages by overriding method print()
* reduced logging of autocompletion list
* removed log location from message and parsing logs, as they are known and make up 90% of logs

src/lib/utility/messaging/MessageBase.h

@@ -1,7 +1,8 @@
 #ifndef MESSAGE_BASE_H
 #define MESSAGE_BASE_H
 
-#include <string>
+#include <ostream>
+#include <sstream>
 
 class MessageBase
 {
@@ -58,6 +59,16 @@ public:
 		return m_keepContent;
 	}
 
+	virtual void print(std::ostream& os) const = 0;
+
+	std::string str() const
+	{
+		std::stringstream ss;
+		ss << getType() << " ";
+		print(ss);
+		return ss.str();
+	}
+
 	UndoType undoRedoType;
 
 private: