[IMP] Technical menu reorg, remove depreacted requests.
Moved low levels object to database structure.
Removed res.request models bu keep res.request.link, res.request.link is used
to flag models worth to be linked by references fields.
Moved currency and state to the approriate directory.
rename links get, allow reference fields without size.
[REM] remove res.request, reorg technical menu.
[REM] shortcuts, deprecated by bookmarks