UI updates for support tab.

Fixes: 29999181
Fixes: 29397123

- Reduce support tile min height to 48dp.
- Add a 8dp spacer between escalation card and first support tile.
- Show different off-hour support escalation title when support hour is
  always avaiable.

Change-Id: I4dacf2b375734c4819b9b19b68fc84faf083c0d4
diff --git a/res/layout/support_tile.xml b/res/layout/support_tile.xml
index 5f7ced4..053f748 100644
--- a/res/layout/support_tile.xml
+++ b/res/layout/support_tile.xml
@@ -21,7 +21,7 @@
     android:layout_height="wrap_content"
     android:background="?android:attr/selectableItemBackground"
     android:gravity="center_vertical"
-    android:minHeight="@dimen/dashboard_tile_minimum_height"
+    android:minHeight="@dimen/support_tile_min_height"
     android:orientation="horizontal">
     <ImageView
         android:id="@android:id/icon"