disable remove button after removal, since no line is then selected
tree66d0b6d1eadd8aad7ac2b6d81ec92030741aae17
-rw-r--r-- 3622 gui.py
-rw-r--r-- 6294 pyvconv.py
-rw-r--r-- 886 rendercommands.xml
-rw-r--r-- 9152 window.glade