Initial i3 configuration

This is derived from my Awesome configuration. Still a lot to do from
a WM perspective. The organization is a bit different and I am giving
it up on the per-display systemd units as it does not really work due
to the fact we only have one user DBus and one environment.

dotfiles/xsession

@@ -0,0 +1,38 @@
+#!/bin/sh
+
+# Ensure we use the appropriate gtkrc-2.0 file
+export GTK2_RC_FILES=$HOME/.gtkrc-2.0
+
+# We do not want to rely on crappy mailcap
+export MAILCAPS=$HOME/.mailcap
+
+# Make QT automatically scale according to screen DPI
+export QT_AUTO_SCREEN_SCALE_FACTOR=1
+export QT_QPA_PLATFORMTHEME=qt5ct
+
+# GTK3 apps try to contact org.a11y.Bus. Disable that.
+export NO_AT_BRIDGE=1
+
+# Environment variables
+unset LC_ALL
+[ -e ~/.zshenv ] && . ~/.zshenv
+
+# Copy some configuration files
+while read source target; do
+    for t in $target; do
+        mkdir -p $(dirname $HOME/$t)
+        ln -nsf ~/.config/i3/dotfiles/$source $HOME/$t
+    done
+done <<EOF
+Xresources .Xresources
+gtkrc-2.0  .gtkrc-2.0
+gtkrc-3.0  .config/gtk-3.0/settings.ini
+qt5ct.conf .config/qt5ct/qt5ct.conf
+systemd    .config/systemd/user
+firefox.js .mozilla/firefox/*/user.js
+EOF
+
+# Services are started with systemd
+systemctl --user import-environment
+systemctl --user daemon-reload
+exec systemctl --user start --wait xsession.target