Revert "XMonad: increase browser zoom size w. retina display"

This reverts commit 9c82a477b094e123ea0d1447bda7426360c8a8ed.
Provide placeholder directories necessary for fresh installs.
irssi: authenticate with SASL on Freenode, use canonical path for SSL cert.
Populate .security with example files dictating format.
Mplayer: revert to default caching behaviour
vim >= 7.4.260 is picky about function names, appease it.
irssi: autojoin #zalora