Improve in style, varnames, docstrings [make it readable after months have passed], a great patch by Gustavo Carneiro with which we can get currently playing music track from Rhythmbox and Muine to be shown in our status message. fixes #564

handle correctly full_jid / jid in events (try to find one with fulljid before trying with jid). SHould fix #2414

fill disco treeview MUCH faster. (disable the search of alerady existing row before adding: This can't happen, and disable sort function while adding items). Fir #2426

before/after_time/nickname are now textviews in pref window. So that they can contacin \n and \t chars. Fixes #2206

(Undo second part of [6735])