Link to addresses on explorers from balances area #3645
Description
Until we link to full token view pages from the balances area of the homepage, we could provide the user with some convenience by linking each balance row to its address's corresponding page on the relevant Bitcoin or Stacks explorers.
Right now clicking doesn't do anything and there's no easy way to view a full address page for an account
Once we do have a token view page, clicking the row could open it and from there we could link to the related explorer address page.
