Properly set skip_deleted and threading on Kolab storage IMAP operations (T1145)
Summary:
Fixes race-conditions between Kolab folders and Roundcube core
where skip_deleted/threading could be set for operations outside
of Kolab plugins, causing e.g. inability to see \Deleted messages.
Fixes T1145.
Reviewers: Roundcube Kolab Plugins Developers, vanmeeuwen
Reviewed By: Roundcube Kolab Plugins Developers, vanmeeuwen
Maniphest Tasks: T1145
Differential Revision: https://git.kolab.org/D112