Fix workspace locations

Workspace names are tweaked and must be referred by variables.

Otherwise, unreachable workspaces with hardcoded names are created.

Install/Templates/home/config/regolith/i3/config

@@ -467,9 +467,9 @@ for_window [class="keepassxc"] move scratchpad
 for_window [class="Mumble"] move scratchpad
 
 # Auto set workspaces
-for_window [class="Firefox"] move container to workspace 9
-for_window [class="^Gimp.*"] move container to workspace 19
-for_window [class="Thunderbird"] move container to workspace 10
+for_window [class="Firefox"] move container to workspace $ws5
+for_window [class="^Gimp.*"] move container to workspace $ws15
+for_window [class="Thunderbird"] move container to workspace $ws6
 
 ###############################################################################
 # Window Resize and Gaps