Add special dmenu script (for dunst)

Update some other configs

.config/dunst/dunstrc##template

@@ -242,7 +242,7 @@
     ### Misc/Advanced ###
 
     # dmenu path.
-    dmenu = /usr/bin/dmenu -p dunst:
+    dmenu = {{ env.HOME }}/.bin/dmenu -p dunst:
 
     # Browser for opening urls in context menu.
     browser = /usr/bin/xdg-open
@@ -314,7 +314,7 @@
     # These values can be strung together for each mouse event, and
     # will be executed in sequence.
     mouse_left_click = close_current
-    mouse_middle_click = do_action, close_current
+    mouse_middle_click = open_url
     mouse_right_click = close_all
 
 # Experimental features that may or may not work correctly. Do not expect them