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/templates/misc.cpp

@@ -36,7 +36,7 @@
 #include "misc.h"
 #include "core/misc.h"
 #include "core/request.h"
-#include "core/user.h"
+#include "models/user.h"
 
 namespace Winix
 {