python3 port
convert subprocess.Popen().stdout.read() output from byte to str
small changes for python3 port
rename pyqttools.py to utils.py and move some functions to it
optimize two functions
add str_to_bool() to utils and use really bool settings vars
decode supbprocess pipe on the fly
replace pyqt tr() method with trUtf8() in order to pass non-ASCII chars
Merge branch 'p3-port'
use python3 import system
move ffmulticonverter script to bin folder
ignore launcher