Refresh adapter on resuming, so that call dates are updated.

When not doing this, the call dates might be wrong (they might e.g. say
'5 minutes ago' even though the call was 2 hours ago).

Change-Id: I44b797e7d09fcfe5ad1745e6b4d2cba2639c1650
JIRA:CYAN-1455
Enable contact photo preloading.

Avoids the delay occuring otherwise when checking into call details.

Change-Id: Ie48285bb03fde0434429079f141ec57dc75a65b9