start working on User and Group classes

- User and Group has been moved to 'models' directory
- removed UserPass struct (passwords fields were put to User struct)
not working yet, we need support for binary blobs in morm

winixd/core/users.h

@@ -36,7 +36,7 @@
 #define headerfile_winix_core_users
 
 #include <map>
-#include "user.h"
+#include "models/user.h"
 #include "ugcontainer.h"
 #include "lastcontainer.h"
 #include "cur.h"