* rename draw_roster to better express its functionality
 * remove unnecessary call of refilter()
 * directly remove groups when there is only one child left and we want to remove it

Note: in gtkTreeStore iters persist as long as the row isn't removed. Iters in Modelfilter persist as long as the model is unchanged.

Fixes #3893.

-Stop using idle_call for marking days with log in calendar, because this was... longer !
-Stop emiting month changed signal two times (so it was even longer)

 * always adjust account toggle state
 * try to eliminate extra adjustmants to group state
 * small function renaming

make pep work, move config options per account, make publish_tune configurable in account context menu. fixes #3954

Evens were not properly removed.

 * update documentation and fix indentation
 * don't remove offline contacts from roster when we open the last pending, non chat message event
 * store account and jid per event

auto_join_bookmarks only join non-opened groupchats. Opened one are already auto-joined on re-connection. Fixes #3891

fix tooltip about logging encrypting messages. (it is now shorter, better understood (jargon removed where possible), and we it's OpenPGP and not just GPG guys {or last time I checked :$})

@bct: When moving the OTR stuff, you would've needed to adjust the
XHTML killing part. This patch fixes it. I didn't even notice since
I have XHTML disabled globally.

fixes #3963