update greeter config file. update theme submodule ref.

data/lightdm-webkit2-greeter.conf

@@ -1,5 +1,5 @@
 #
-#[greeter]
+# [greeter]
 # webkit-theme = Webkit theme to use. (Default: antergos)
 #
 
@@ -7,11 +7,13 @@
 webkit-theme=antergos
 
 #
-#[branding]
-#logo = Path to logo image for use by greeter themes.
-#background_images = Path to directory that contains background images for use by greeter themes.
+# [branding]
+# logo = Path to logo image for use by greeter themes.
+# user_image = Default user image/avatar. This is used by greeter themes for users that have no .face image.
+# background_images = Path to directory that contains background images for use by greeter themes.
 #
 
 [branding]
-logo=img/antergos-png
-background_images=/usr/share/antergos/wallpapers
+logo = img/antergos.png
+user_image = img/antergos-logo-user.png
+background_images = /usr/share/antergos/wallpapers

themes/antergos

@@ -1 +1 @@
-Subproject commit 2940966e2d1edaed26b634aa69032b08a3e18c0a
+Subproject commit dbe44d3df77f0ebcf752d9c374578a3a6da98296