Revert "zsh: umask 077"

This reverts commit 54ecf67f086a737f0c89126059086b4f39c9c276.
vim: use default listchars
zsh: add trailing whitespace to sudo prompt
irssi: added nickserv networks
irssi: remove OFTC
irssi: verify hackint certificate
zsh: set locale
Revert "vim: use default listchars"

This reverts commit b8a661f9c1b5b2931546813632583deb473e73b2.