Show in stash window doesn't work.

[PyroBor]

When choosing to show the diff of one particular stash. It doesn't do anything. I think i should show diff or something. And the output in the terminal is this:

Traceback (most recent call last):
  File "/usr/share/git-cola/lib/cola/qobserver.py", line 112, in SLOT
    self._callbacks[param](*args)
  File "/usr/share/git-cola/lib/cola/controllers/stash.py", line 101, in stash_show
    cola.notifier().broadcast(signals.diff_text, '%s\n\n%s' % (diffstat, diff))
NameError: global name 'signals' is not defined

This is with version 1.4.0

[davvid]

controllers.stash: Add missing cola.signals import

We forgot to import the signals module when this class during
the last round of refactoring.

Closed by ac662d24002a52348a86eb4d37eb426b94689ff2

Signed-off-by: David Aguilar davvid@gmail.com