Add null check for call handle

Call.getHandle() can return null for some self-managed connection
services. CallLogManager sometimes would throw a NPE that gets swallowed
by the binder.

Add null checks throughout Telecom for the call handle. Also add logging
in CSW to actually display exceptions that happen during binder
transactions.

Also replace some unholy tabs with rightous spaces in CSW.

Change-Id: I816f86441a969a410095bb12bae307323c517fed
Fixes: 78811915
Test: manual