added: 'remember me' flag when logging

added: the session file
       sessions can still be available between starting and stopping the cmslu system


git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@529 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/requestcontroller.h

@@ -17,6 +17,7 @@
 #include <pwd.h>
 #include <grp.h>
 #include <errno.h>
+#include <ctime>
 
 #include "../content/content.h"
 #include "sessionmanager.h"
@@ -42,10 +43,14 @@ public:
 	void Close();
 	void Loop();
 
+	void LoadSessions();
+	void SaveSessions();
+	void SaveSessionsIfNeeded(); // saving only once a day
 
 	SessionContainer::Iterator SessionBegin();
 	SessionContainer::Iterator SessionEnd();
 
+	time_t last_sessions_save;
 };