fixed imports in gui, and include gui in setup.py

MANIFEST.in

b_asic/GUI/__init__.py

b_asic/GUI/arrow.py

b_asic/GUI/drag_button.py

b_asic/GUI/main_window.py

b_asic/GUI/port_button.py

b_asic/GUI/properties_window.py

b_asic/GUI/show_pc_window.py

b_asic/__init__.py

b_asic/__init__.pyc

b_asic/save_load_structure.py

setup.py