Limit number of items grouped on a row to 3.

With shortcuts this allows for more space to display two word title
below without ellipsizing it. (screen/4pJvcFFKJhooqZU)

Also let widget description show upto 3 lines to more of it to show
when stacked (screen/7xv8ng4H7iRLU79)

Bug: N/A
Flag: N/A
Test: Screenshot
Change-Id: Ia4e30f943f602b811e607d9cb52152f78cdc20e5