* Added NS_RECEIPTS to protocol namespace list.
* Show our support of XEP-0184 in caps.
* Added a big, fat warning to get_contact as this does not work as
  expected.
* There was some strangeness in our XEP-0022, it added an id tag to
  the x tag, which isn't mentioned anywhere in the XEP. And for some
  strange reason, that id even was the same all the time.
* Fixed a typo.

use SSLv23 method (it support SSLv2, v3 and TLSv1) instead of only TLSv1 method as some server (gmail) don't support TLSv1 method. fixes #3786

 * Change metacontact ordering. Fallback to priority only if two contacts have the same show, not the other way round.
 * Move contacts that just signed out to the bottom of the group, not to the top.

-Use a method to get_shown_groups (possibly more work to do (special group attribute))
-Show contact only if contact.ask, not according to modified xep 0162 logic. (I don't get neither the xep
meaning, neither this modified logic, can you explain steve-e ?)
-Remove contact before we modify it req_sub(). Else we can't remove it because iter is not found.
-When removing a contact and we let him in see us (observer), manually set show to offline, so he is not set as
visible.
-Remove observer from observer group if we asked him auth (I mean before he answer). Xep 0162 say he is not an
observer then. Fix contact staying in observer group when we get auth later.
-Renaming groups seems fixed (it's an accident :p )

More work on group to follow

 * don't traceback when selfcontact is disconnecting
 * make more use of "remove contact after last event removed" mechanism
 * correctly redraw bigbrothers after status change
 * handle situation where we receive a message, go offline without reading it and reconnect after another resource has moved the sending contact to another group.

know bugs: newly added transports added to "not in roster group"

this way we don't get multiple tabs when the remote user moves to another resource.

 * show correct expand icon for metacontacts in different groups
 * only redraw parent when really necessary
 * remove obscure code
 * fix draw_parent_contact

(Commit correct hg rev :-) )

Do not risk invalidating child_model iters when redrawing a contact.
Move logic to update the family when the big brother has changed to an extra function.

ToDo:
 * nearby_family code duplication
 * totaly restructure and cleanup draw_contact

* Fixed a BT when receiving receipt request for users not in roster.

-When creating self-contact contact instance, store it with group 'self_contact', so it never goes in General
-Make general group not be seen visible because of self contact even if self.regroup
-Remove the self contact instance itself too when WE deconnect or when IT deconnect, so we will
not see it as offline if refilling roster (regroup account for example)

* Don't asnwer to receipt requests from users not in roster.

Sorry, it just wasn't maintainable. The problem is the current libotr
API. I'm sick of working around the strange libotr API, sick of getting
HTML messages, sick of losing messages. The final argument for
completely removing it was that we can't get the message ID of a sent
msg anymore - which we need. I tried to work around this as well, but
there seems to be no way to wait for a signal in glib the way I would
need it for the workaround (I wanted to emit a signal in inject_message
and then wait for it after the call to otr_message_fragment_and_send
so the signal can pass us the message id). And the last reason is that
we're heading towards a new release and thus want to stabilize the code,
thus don't have time to work around even more libotr API strangeness.
I will give feedback to the libotr developers, who are currently
planning a new API, so that we can hopefully see OTR support once again
as soon as libotr4 is released.

Kjell already announced that he will continue his branch:
https://code.launchpad.net/~afflux/gajim/otr

I really hope the libotr devs will provide a sane API with libotr4 so
we can integrate OTR support again.

Oh, and I added one more try/except block for OS X.

Don't make General group visible when we have self contact.

This code seems not necessary. But why does that created that problem ?
It seems for some reason, path is not good. Probably the iter itself is not good. So expand act on the wrong
group (I can proove that).