add widgets to .pro

this is required for QApplication
replace CONFIG by QT

Qt5 does not work with CONFIG anymore
TlsV1 is deprecated in favor of Tlsv1_0
QString toAscii is deprecated replacing with toLatin1

toAscii used to be toLatin1 anyway
Temporarily remove queryItems
remove unused JsonRpcAdaptor* from json_jsonqt

These classes required ifdef for qt4 and qt5 specific functions and they are unused
Work in progress, blocked at the new plugin stuff
Stop using the deprecated reset() function conferences

Fixing the time columns is still required
add widgets and uitools in xlets.pro
Move the switchboad xlet to the new plugin system
Move the services xlet to the new plugin system
Move the queues xlet to the new plugin system
Move the queue_members xlet to the new plugin system
Move the queue_entries members xlet to the new plugin system
Move the identity xlet to the new plugin system
Move the history xlet to the new plugin system
Move the directory xlet to the new plugin system
Move the datetime xlet to the new plugin system
Remove resets from the History xlet
Move the agent_status_dashboard xlet to the new plugin system