[btcsuite/blocksafari] 5668ea: Update to use btcjsonv2.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/blocksafari
  Commit: 5668ea531647a25afce64669f6597f4c34d73a40
      
https://github.com/btcsuite/blocksafari/commit/5668ea531647a25afce64669f6597f4c34d73a40
  Author: Dave Collins <da...@conformal.com>
  Date:   2015-04-05 (Sun, 05 Apr 2015)

  Changed paths:
    M blocksafari.go
    M html.go

  Log Message:
  -----------
  Update to use btcjsonv2.

This commit updates all references to btcjson to the new version 2 of the
package.