[damned-lies] Added --gnome to pofilter to exclude translator_credits from false positives

[Claude Paroz <claudep src gnome org>]

commit 57bb9d63c07065b033c6b19dbb8c361da1a7f353
Author: Claude Paroz <claude 2xlibre net>
Date:   Sun Mar 11 09:43:09 2018 +0100

    Added --gnome to pofilter to exclude translator_credits from false positives

 vertimus/models.py |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/vertimus/models.py b/vertimus/models.py
index b4a520c..9e3ed16 100644
--- a/vertimus/models.py
+++ b/vertimus/models.py
@@ -376,7 +376,9 @@ class ActionAbstract(models.Model):
 
     def check_po_file(self, filters=('xmltags',)):
         status, out, errs = run_shell_command(
-            ['pofilter', '--progress=none', '-t'] + list(filters) + [self.most_uptodate_file.path]
+            ['pofilter', '--progress=none', '--gnome', '-t'] +
+            list(filters) +
+            [self.most_uptodate_file.path]
         )
         if status == STATUS_OK:
             return out