Fixing smartspace position on lockscreen with big clock visible on large screens

Smartspace position when big clock appears should be updated by translating smartspace view. However, calculation sometimes was done before views were laid out and then using methods like getTop() would always return 0 and it would result in incorrect translation value. The solution is to check if views were laid out and if not, schedule repositioning only after that's done.

Fixes: 201548045
Test: manual
Change-Id: Id2494c1d6e4835765550d2abe58cc678dae641c1