Clean up multi picker activity.

Change-Id: Id8d66cf3ff5f806a053f40bd4d8db453ab292219
Add missing colon to memory status

Change-Id: I8cf4de87635a0b06a47f9763bc6658119e6f2411
Fix string

Change-Id: I7df61e84df57959a5c1d8f99634f62a9e315fec7
Contacts: Null check local group query result

Change-Id: I1240c73362ea946b906ecb9ecd27a2bcb0b8e545
Contacts: Remove unused strings

Change-Id: Ib477c4f24e5e5c4b7222212ea25c38e0161608b1