Correct packages - fix compile issue
Fix LPIS url: change LPIS_FB4_01 back to LPIS_FB4
Execute tracer task using Main.worker.submit()
Move LpisRecord variable into trace() task function
Move RuianRecord variable into trace() task function
Move RuianLandsRecord variable into trace() task function
Create PleaseWaitRunnable object inside tracer modules
Encapsulate LPIS trace code into LpisTraceTask class
Split LPIS tracing to async download and synchronous polygon edits

Also cleanup LpisModule class and tracer code...
Add basic cancellation of LPIS tracer task

Still not perfect, it should break and close the connection
to remote LPIS server.
Encapsulate RUIAN trace code into RuianTraceTask class

Also split the tracer code to async download and synchronous
map updates, cleanup RuianModule class and code.
RUIAN: switch m_finished and m_valid_from
ConnectWays: fix Node is already deleted exception caused by tail