irc: use irc_protocol_nick_address for ban/quiet/invex/exception lists
doc: minor changes in developer's guide
core: fix buffer property "lines_hidden" when merging buffers or when a line is removed from a buffer (closes #226)
Merge branch 'master+irc_protocol_nick_address' of git://github.com/maxteufel/weechat into maxteufel-master+irc_protocol_nick_address
irc: add argument "server_message" in function irc_nick_color_for_msg
irc: fix display of channel exception list (348) with 6 arguments (date missing)
core: update translations
core: update ChangeLog
irc: add support for CAP extended-join
irc: fix display of "(null)" as real name when it is missing in extended-join
core: update translations
core: update ChangeLog
irc: add "extended-join" in help of server option "capabilities"
core: update German translations
doc: update German documentation
core: add issue #143 in ChangeLog
doc: update German auto-generated files
irc: reformat some code to make it more readable
trigger: fix trigger example "effects" in /help trigger (update regex to new format)
doc: update German documentation