Misc ui tweaks.

- Update conditional card layout
  - move action button from right side to bottom.
  - Get rid of the forking between small/big screens.

- Update a few icons

Fixes: 121189136
Fixes: 124315564
Fixes: 124316920

Test: visual
Change-Id: I205d9995a2d7ed06ad9d32f3cea74f2840a28aed

src/com/android/settings/slices/SliceBuilderUtils.java

@@ -449,14 +449,14 @@ public class SliceBuilderUtils {
         int iconResource = data.getIconResource();
 
         if (iconResource == 0) {
-            iconResource = R.drawable.ic_settings;
+            iconResource = R.drawable.ic_settings_accent;
         }
         try {
             return IconCompat.createWithResource(context, iconResource);
         } catch (Exception e) {
             Log.w(TAG, "Falling back to settings icon because there is an error getting slice icon "
                     + data.getUri(), e);
-            return IconCompat.createWithResource(context, R.drawable.ic_settings);
+            return IconCompat.createWithResource(context, R.drawable.ic_settings_accent);
         }
     }
 }