i3: move tray-output to dotter

.dotter/global.toml

@@ -27,6 +27,8 @@ mc = "~/.config/mc"
 [i3.variables]
 monitor-primary = "not-specified"
 monitor-secondary = "not-specified"
+# Tray-output defaults to primary
+tray-output = ""
 
 [emacs.files]
 "emacs/doom" = "~/.config/doom"

.dotter/kardorf.toml

@@ -2,3 +2,4 @@
 monitor-primary = "DVI-D-1"
 monitor-secondary = "VGA-0"
 screenlayout-script = "~/.screenlayout/2desktop-vga2.sh"
+tray-output = "tray_output VGA-0"

i3/i3/config

@@ -189,7 +189,7 @@ bar {
     status_command i3status-rs
     position bottom
 
-    tray_output secondary
+    {{tray-output}}
 }