PR for #114

[ryliewalsh]

Closes #114

Discussion

Updated overall UI for a cleaner look. Implemented new cube button that allows user to upload a different .cube file (not fully tested because we don't have different cube file yet). Implemented an exit button that clears all output and displays instructions on restarting the program.

Removed the original loading widget idea as the response is quicker now will discuss in next meeting.

Testing

• Run ./build.sh
• Open GoVizzy.ipynb
• Run the cells
• Verify exit works on display menu
• Verify cube file loads and menu changes
• Verify exit works on display page
• Verify when new cube button is pressed display menu is returned

[dignojrteogalbo]

Not sure what "Verify exit works on display page" meant but I was able to click the red [X] button to see the message to restart the kernel and re-run the cells. It works on my end.