Change Style tab's content layout

 - Change style content layout to grid(was 1 line only, recycleview)
 - Move Custom option to the first
 screenshot: https://screenshot.googleplex.com/pZ7tTOqk71R.png

Bug: 151285552
Test: manually
Change-Id: I7d5ef1ef3ac81d6da4d29052f49ddf30335564f8