Edit options in federated sharing

[jesmrec]

iOS app does not handle the three edit options (create, change, delete) in federated sharing for folders.

Server side already does it, so it is a needed improvement.

[nasli]

This should only apply for server greater than 9.1 I guess

[nasli]

Android related owncloud/android#1758

[jesmrec]

@nasli right, only 9.1 (and higher)

[jesmrec]

FTM, blocked by owncloud/core#26173

[jesmrec]

Server bug already fixed.

CC @nasli

[davivel]

Sorry, but we need to drop issues from milestone 3.6.0 to get it out next to OC 10 server.

This time we'll move topics to backlog instead of directly to next release, so that we can schedule 3.7.0 properly.