add customizable text column after which weechat will start inserting

Signed-off-by: Moritz Ulrich <ulrich.moritz@googlemail.com>
add optional filling of text

Signed-off-by: Moritz Ulrich <ulrich.moritz@googlemail.com>
Merge branch 'master' of git://github.com/the-kenny/weechat.el
Added Hook support for weechat-mode.

Signed-off-by: Rüdiger Sonderfeld <ruediger@c-plusplus.de>