added: notifications to users' emails

(core/notify.h core/notify.cpp)
       templatesnotify directory
       all notifications are managed by a second thread


git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@512 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/misc.h

@@ -43,4 +43,6 @@ bool IsWhite(int s);
 void TrimWhite(std::string & s);
 void ToSmall(std::string & s);
 
+bool ValidateEmail(const std::string & email);
+
 #endif