mod_register_ibr: Add FORM_TYPE as required by XEP-0077 (fixes #1511) Backport of f90abf142d53 from trunk

doap: Add UTR-39 (mod_mimicking) Supported in ICU, with a binding in util.encodings. mod_mimicking uses this to prevent similarity looking JIDs from being registered. Planned to be used in MUC as well.

Merge 0.11->trunk

mod_storage_sql: Add index covering sort_id to improve performance (fixes #1505)

mod_admin_telnet: Handle unavailable cipher info (fixes #1510) The LuaSec :info() method gathers info using the OpenSSL function SSL_get_current_cipher(). Documentation for this function states that it may return NULL if no session has been established (yet). If so, the LuaSec functions wrapping this return nil, triggering a nil-indexing error in mod_admin_telnet.

MUC: Add ad-hoc command setting affiliation in a room (fixes #1174) This gives service admins a way to set an arbitrary affiliation in any room. Enables various administrative use cases such as room ownership reassignment or recovery. Reduces the need for the admins-as-owners feature, as this can be used by admins to make themselves owner in any room when needed, instead of being owners all the time.

MUC: Add test for destroying a room by ad-hoc command Testing ad-hoc commands was not easily doable before 49312378ba1d relaxed the need for state and an extra roundtrip to execute commands

doap: Add XEP-0317: Hats See 76bb806cdd4b

usermanager: Fix traceback when checking admin status of host-only JIDs (fixes #1508)

mod_presence: Advertise support for Subscription Pre-Approval RFC 6121 §3.4 says: > If a server supports subscription pre-approvals, then it MUST > advertise the following stream feature during stream negotiation. The feature itself (#686) was added in f0e9e5bda415