added a loading image for those building corpkit_gui.py
added a loading image for those building corpkit_gui.py


Former-commit-id: d8b6a5e23d378a270ab15cc8a09f8519e96051f0 [formerly 9a1c2e2e55d5d345d950a556750822ee4f83adf2]
Former-commit-id: 1c4722d4fb84a2e3cdec09e4f77941d548a0bb19
interrogator/corpkit,interrogator/corpkit