Massive changes for archlinux move

- Add Xft Xresources to make fonts not ugly
- Add dunstrc now that I'm using dunst
- Manage GTK settings now that I'm free of mate-settings
- Add an i3 keybind for pcmanfm
- Make kitty font size chords +/- by 1pt and not 2pt
- Explicitly specify fonts everywhere
- Put barrier and dunst in xinitrc
- Make QT theme explicit via env var
- Move ZSH keybinds to global since Arch doesn't bind them

.zshrc

@@ -25,17 +25,23 @@ export PATH=~/bin:$PATH
 export EDITOR=vim
 export VISUAL=$EDITOR
 
+# QT theme via qt5ct app
+export QT_QPA_PLATFORMTHEME=qt5ct
+
 # most does not exist on every system I touch
 if [[ -a /usr/bin/most ]]; then
     export PAGER=most
 fi
 
+# Key binds
+bindkey "^[[H" beginning-of-line  # HOME
+bindkey "^[[F" end-of-line        # END
+bindkey "^[[3~" delete-char       # DEL
+bindkey '^R' history-incremental-search-backward
+
 # OS-specific directives
 case "$OSTYPE" in
   darwin*)
-    bindkey "^[[H" beginning-of-line  # HOME
-    bindkey "^[[F" end-of-line        # END
-    bindkey "^[[3~" delete-char       # DEL
     alias ls='ls -G'
   ;;
   linux*)