Do not include test themes in theme jar (#13634)

Change-Id: Id3cc353b1e74fa51326ce84d33e741227f98f9b0
Depend on sass-compiler, not the old theme-compiler (#14009)

Change-Id: I0635ea0a390c868162695291176d0ce416dfaf4c
Add option for collapsing empty rows/columns in GridLayout (#14392)

This reverts the new default behavior introduced in fix for #8855.
If you want empty rows/columns to be ignored when rendering,
use GridLayout.setHideEmptyRowsAndColumns(true)

Change-Id: I38a8717d79cec7739b649174654b615db9d8dc7e