git-map-branches -v -v -v currently indicates the status of the CL using
a color. This change adds the status string alongside the CL to match
the output of 'git-cl status'.

  $ git map-branches -v -v -v

Before:
  A        354ccf6 [ ahead 1 ] https://codereview...
    B      e701150 [ ahead 1 ] https://codereview...
      C *  094cedd [ ahead 1 ] https://codereview...

After:
  A        354ccf6 [ ahead 1 ] https://codereview... (commit)
    B      e701150 [ ahead 1 ] https://codereview... (lgtm)
      C *  094cedd [ ahead 1 ] https://codereview... (waiting)

R=dpranke@chromium.org
BUG=none

Review-Url: https://codereview.chromium.org/2138703003