No GUI icons on Linux system

Created by: mlauster

In the gensim workshop, one participant run TEASER on ubuntu, what went fine except the icons in the GUI didn't show up. I suspect some path issues according to http://stackoverflow.com/questions/8430751/pyqt4-icons-are-not-displayed-in-the-gui. Perhaps the application is run in another folder than on Windows. The link suggests to integrate the icons directly within the code.