If device doesn't have dialer, show file manager shortcut instead

Tablets like flo do not have a dialer, and they would end up with two contacts
shortcuts side by side. This patch aims to, on the devices where no dialer is
available, use that spot with anything else.

Change-Id: Ib0729be5b938bc909c446fe6c95a3d9f48aa660d
Merge branch 'remote' into mkl