I've removed the "userFeatures", because I think a user cannot have features.

As per XEP-0163:

The server MUST return an identity of "pubsub/pep" on behalf of the account (as well as a list of the namespaces and other features it [the server?)] supports)
Anyway, the old logic only returned one feature (disco#info) for the user,
which was wrong, too (the pubsub features were missing at least)

disco#items addressed to the account (bare jid) or without 'to' attribute are treated the same now, too.

Also partially addresses OF-872.

Should not store chat state messages, which contain a thread element.

OF-1037: Split Bookmarks from ClientControl.

The problem was, that the logic stored empty chat messages, which contained a thread and chat state. The loop first checked the namespace of the thread, which was empty and therefore thought it should store it.

OF-1042: Don't NPE when a session is already closed when </stream>

Update plugin min Openfire version requirement to 4.0.0

Fixes for banning problems in MUC rooms

After banning, the user is not kicked from the room. The user is added
to the ban list so they can't re-join the room or post messages, but
they are not kicked out of the room so the user can still receive messages
sent to the room.

The problem is an additional check for isMembersOnly() was only allowing users
to be kicked from members only chat rooms. Whenever a user is marked as an
outcast they should be kicked from the room regardless of if the room is a
members only room or not.

Looks like this problem was introduced in commit
822abb01

Based on the MUC spec it should be sending "outcast" on banning.

Looks like this was introduced in commit 822abb01

Previously, we had a quasi-hack of `3.11.0-alpha` as the min requirement
on these, but this release never happened.  This update moves all these
plugins to 4.0.0, which hopefully provokes less confusion.

Denote Openfire 4.0.0 Release

OF-454 Reflect presence to originator

Only use SSLv2Hello for client-mode

OF-1004: Apply i18n to admin console

Fix some javadoc warnings

OF-821: Count occupants by nickname

OF-1034 Check for existing sessions properly

Returns the count of nicknames rather than the number of connections
(full JIDs), which will now also match the list of occupants.

solve the memory leak problems which is caused by add LocalMUCRoom ob…

OF-821: Prevent duplicates for MUC item query

Drop unnecessary null check.

Corrects issue with multiple JIDs sharing a nickname (masquerading)

Replaced the 'set this var with this translation' definition for
a functional equivalent but easier-on-the-eyes definition.

Fix implementation bug for XEP0049.

OF-1033: Should use the correct status code.