Shares panel overhaul
Currently not overly usable.
I'm thinking about renaming this to "Competition" or "Companies" as it is where you can see how your company ranks against others, but also lets you buy/sell shares in other players to buy them out. In here it should also let you join other companies from here instead of the company panel.
Need to be able to see net worth of other companies. Companies should be sorted by net worth from high to low.
From #17 (closed): shares to be included as expenses/revenues in company panel