Added a "Progress" page

I added a Progress page, which you can access on the top, to illustrate how far I am to financial independence. The page will show a plot of net worth over time. The graph is a sum of my emergency funds in my bank account and the total sum of all my portfolios. I will update this graph every month when I make a purchase. I am steadily increasing my portfolio value as well as my emergency fund every month. I'm putting less emphasis on the emergency fund for now.