Engine-XMPP: display preferred nickname as local echo name
Engine-XMPP: forgot to rejoin chatrooms and reenable private chats on reconnect
Merge pull request #154 from oli-obk/fix/reenable_on_reconnect
Engine-XMPP: unknown muc error messages got swallowed silently
Engine-XMPP: send preferred nickname to contacts
Engine-XMPP: nicknames from contacts were ignored

when a nickname is received, the roster name of the contact is updated
Engine-XMPP: nickname changed messages did not appear in ContactChat anymore
Merge pull request #152 from oli-obk/fix/muc_error_messages
Merge pull request #153 from oli-obk/feature/nickname
[Engine-VBulletinChatbox] Initial vBulletin Chatbox support.

Initial protocol module for the vBulletin Chatbox plugin.
[Engine-VBulletinChatbox] Fix skipping old messages.
[Engine-VBulletinChatbox] Leave message parsing to MessageBuilder.
[Engine] Use HtmlAgilityPack to parse HTML and improve image parsing.
[Engine-VBulletinChatbox] Implement /me support.
[Engine-VBulletinChatbox] Trace calls.
[Engine-VBulletinChatbox] Update token if sending fails; Unicode

Update the security token and, failing that, try to log in anew if
sending a message fails the first time. Include commands to do this
manually.

Also, add Unicode support (decimal XML character escapes).
[Engine-VBulletinChatbox] Fix /relogin and /retoken.

* /retoken shouldn't request the security token twice.
* /relogin should request a new security token after login.
[Engine-VBulletinChatbox] Highlight my own nickname.

A bit weird that this is done completely manually in each protocol.
[Engine-VBulletinChatbox] Improve status messages.

Now output with every relogin or retoken operation, with less copy-paste!
[Engine-VBulletinChatbox] Don't prepend event prefix to commands header.