Server closing with SIGINT functionality done.

Signed-off-by: Krzysztof Opasiak <ups100@tlen.pl>
short string from qvariant list and some consts
negative values fix
Merge branch 'master' of github.com:ups100/UXP1A into js

Conflicts:
	code/Server/include/CommandQueue.h
	code/Server/src/CommandQueue.cpp
	code/Server/src/main.cpp
Complete clean SIGINT handle.