Merged in m0e_lnx/m0e-vabs (pull request #51)
the current gufw version runs on gtk+3 but has UI problems. This reverts to an older (pygtk) version of it, and renames the current gufw branch to gufw3
the current gufw version runs on gtk+3 but has UI problems. This reverts to an older (pygtk) version of it, and renames the current gufw branch to gufw3