[Owncloud] Permissions & CRUDS

[Thomas Tanghus]

We ended up in a discussion which kind of touches the fundamentals of ownCloud 
in https://github.com/owncloud/core/issues/151#issuecomment-10116749

The Share API has a clear definition at 
https://github.com/owncloud/core/blob/master/lib/public/share.php#L50

I have used those for defining permissions for non-file objects like calendars 
and addressbooks.

For me it would make sense to use those consts as a basis for the CRUDS 
paradigm.

Comments?

-- 
Med venlig hilsen / Best Regards

Thomas Tanghus