Added methods for error handling in OneProcess
Improved code readability a bit for slotCopyToData in OneProcess
Changed eignalEnd at OneProcess
Made cmd messages clearer and improved signalEnd in OneProcess
Changed flow file structure
Made error messages cleares
Flow file now saves only if task status is success or ioerror
Merge github.com:veaceslav/WHC-IDE

Conflicts:
	src/diagram/diagramscene.cpp
Added logging option in UI
Now saves logging option
Merge pull request #30 from mirror3000/master

Process error handling