Display current potential power for currently logged in user in the UI

[ianconsolata]

While the total cannot be known, the power score (i.e. token count, developer score, client deal bytes, and SP raw byte power) should be displayed in the UI somewhere so that a user knows roughly how much power they have.

This is helpful in ensuring that folks are logged in with the right account

[ianconsolata]

More details on how it should work:

• The power for the logged in wallet should only display on the proposal page
• Each proposal should know what date it will use to calculate power already
• Each proposal will likely have a different date, and therefore display a different power
• Power in all categories should be displayed (i.e. Token Count, Developer Score, Raw Byte Power, and Client Deal Bytes)
• The details about power level should be added with a small info icon next to the "Cast your Vote" in the following section
  
• On hover, that icon should display a chart similar to the chart used for the final vote power, but without the percentages removed, like below: