Parse command output from utf-8

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/vcs.py

@@ -473,7 +473,7 @@ class GitRepository(Repository):
 
         header = True
 
-        for line in text.splitlines():
+        for line in text.decode('utf-8').splitlines():
             if header:
                 if not line:
                     header = False