include nzmqt as a submodule from github repo
update submodule to get pri file which can be included in rbkit pro file
start using qt bindings imported from nzmqt
remove code which directly uses zmq.hpp as nzmqt imports zmq.hpp
use nzqmt messageRecieved signal, and emit messages once received
remove nzmqt as a submodule
Squashed 'nzmqt/' content from commit 303f107

git-subtree-dir: nzmqt
git-subtree-split: 303f107618e27d536027525bcc1179e028ee4737
Merge commit '1444906f9080e76d77190d2bef6fe3d00627fc90' as 'nzmqt'
Merge pull request #24 from code-mancers/use-git-subtree-for-nzmqt-source-code

Use git subtree for nzmqt source code