switch back to returning iterator from killNodeAtHashIterator
switch to explicit lock and unlock in removeSilentNodes
use new signal slot syntax in JurisdictionListener
comment out the JurisdictionListener's connection for now
add mutex locking to NodeHash
remove two unused variable warnings
repair badly scoped usage of QMutexLocker
Merge pull request #1583 from birarda/nodelist-container

NodeList container repairs