Update windowsservice_win.cpp

Changed work of tfmanager (treefrog) in Windows service mode.

Then treefrog started as Windows service:
 1. Find service name by PID of process;
 2. Register handler vy Service name;
 3. Find path to executable file and pass it to managerMain() function for correct initialization of QCoreApplication/QApplication;
Corrected work of treefrog as Windows service.
updated indents.
Merge branch 'Romastyi-master'