doc: update german translations, FAQ and user's guide
Merge branch 'master' of git://git.sv.gnu.org/weechat

#
# .git/MERGE_MSG
# merge
doc: fix typos in french translations and docs
core: update portuguese translations
Merge branch 'master' of git://git.sv.gnu.org/weechat

#
# .git/MERGE_MSG
# merge
doc: fix typo in french user's guide
core: update german translations
Merge branch 'master' of git://git.sv.gnu.org/weechat

#
# .git/MERGE_MSG
# merge
core: fix memory leak on unhook of a print hook (if using tags)
relay: add support of secured data in option relay.network.password (evaluate content) (patch from Nils Görs)
irc: add note about evaluated content of "password" server option
core: add support of secured data in proxy options username/password (evaluate content)
core: update german translations
core: add proxy options username/password in /help secure
doc: add plugin "script" in list of plugins (user's guide)
irc: add extra info in /help irc.look.smart_filter_delay
aspell: fix detection of word start/end when there are apostrophes or minus chars before/after word (thanks to Nils Görs)
core: update german translations
Version 0.4.2-rc2
core: update german translations