gui: Adding Face list/create/destroy operations

Change-Id: Ic27f110bb31048048136c76bfb243f56405218d1
Refs: #2430
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 766ab99..9484591 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -5,4 +5,11 @@
         <!-- Customize your theme here. -->
     </style>
 
+    <style name="dialog_margin">
+        <item name="android:layout_marginTop">16dp</item>
+        <item name="android:layout_marginLeft">4dp</item>
+        <item name="android:layout_marginRight">4dp</item>
+        <item name="android:layout_marginBottom">4dp</item>
+    </style>
+
 </resources>