qdiff for pending merge from qcommit traceback

[Alexander Belchenko]

Invoking qdiff for pending merge from qcommit window (double click revision on Pending Merges tab) now failed with traceback:

bzr: ERROR: exceptions.AttributeError: 'RevisionView' object has no attribute 'refresh_button'

Traceback (most recent call last):
  File "C:\work\Bazaar\plugins\qbzr\lib\commit.py", line 210, in default_action
  File "C:\work\Bazaar\plugins\qbzr\lib\revisionview.py", line 50, in __init__
AttributeError: 'RevisionView' object has no attribute 'refresh_button'

bzr 2.3.1 on python 2.6.6 (win32)
arguments: ['C:\\Program Files\\Bazaar\\bzr.EXE', 'qci']
encoding: 'cp1251', fsenc: 'mbcs', lang: None
plugins:
  acad C:\work\Bazaar\plugins\acad [0.8.0]
  bzrtools C:\Program Files\Bazaar\plugins\bzrtools [2.3.1]
  colo C:\work\Bazaar\plugins\colo [0.3.0dev]
  explorer C:\work\Bazaar\plugins\explorer [1.1.3dev]
  format1 C:\work\Bazaar\plugins\format1 [unknown]
  launchpad C:\Program Files\Bazaar\plugins\launchpad [2.3.1]
  qbzr C:\work\Bazaar\plugins\qbzr [0.21.0dev]
  rewrite C:\Program Files\Bazaar\plugins\rewrite [0.6.2dev]
  scmproj C:\work\Bazaar\plugins\scmproj [0.6.1]
  x_bit C:\work\Bazaar\plugins\x_bit [1.0.0]

It seems new qdiff toolbar has to be updated to that mode.