Fine-tuned enlarging of contact photos

When tapping a contact detail photo on any device, the
detail photo will attempt to expand as large as indicated
while still remaining fully on the screen and leaving some
space underneath to show the popup menu options.

If there is no photo, then there will be no expansion
although writable contacts will show a popup menu.

Bug: 6462711
Change-Id: I8f69a1c18dfa10ff0d02b9dbd3ba78043cc7eb4e