Notification should show details from own database rather than contact list

[jmlich]

Currently is function called as follows:

exphone/daemon/blockcontroler.cpp

Line 59 in 76946f2

showNotification(callerId, callerName);

the callerName argument came from libwatchfish and contain contact name from contact list.
"Reason of blocking" (note column in database) and/or "Name" (name column in database) should be used instead.