gtk: Improve menu appearance.

resources/gtkrc

Index: resources/gtkrc
diff --git a/resources/gtkrc b/resources/gtkrc
index e1563b6c47c4092d1b3a1166aec1ac4e13be2389..dec336d697133f8c750bc5eb3e69e00bd59b7698 100644
--- a/resources/gtkrc
+++ b/resources/gtkrc
@@ -2,7 +2,8 @@ gtk_color_scheme = "fg_color:#000\nbg_color:#F7F7F7\nbase_color:#F7F7F7\ntext_co
 
 gtk-font-name="ChromeDroidSans 9"
 
-# Disable button images.
+# Disable menu and button icons.
+gtk-menu-images = 0
 gtk-button-images = 0
 
 # Diable mnemonics for labels and menu items.
@@ -80,6 +81,10 @@ style "default" {
   # Turn off extra menu vertical padding
   GtkMenu::vertical-padding = 0
 
+  # Cut down horizontal padding on menu items since we're not using icons.
+  GtkMenuItem::horizontal-padding = 0
+  GtkMenuItem::toggle-spacing = 0
+
   engine "theme" { }
 }