[pybliographer] Update Polish translation

[Piotr Drąg <piotrdrag src gnome org>]

commit c8f39232465f3f64dd43c33f41c896917b1fae11
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Apr 30 19:37:34 2017 +0200

    Update Polish translation

 po/pl.po |   20 ++++++++++----------
 1 files changed, 10 insertions(+), 10 deletions(-)
---
diff --git a/po/pl.po b/po/pl.po
index 3645500..321d79a 100644
--- a/po/pl.po
+++ b/po/pl.po
@@ -1,16 +1,16 @@
 # Polish translation for pybliographer.
-# Copyright © 2014-2016 the pybliographer authors.
+# Copyright © 2014-2017 the pybliographer authors.
 # This file is distributed under the same license as the pybliographer package.
 # Paweł Żołnowski <pawel zolnowski name>, 2014.
-# Piotr Drąg <piotrdrag gmail com>, 2015-2016.
-# Aviary.pl <community-poland mozilla org>, 2014-2016.
-# 
+# Piotr Drąg <piotrdrag gmail com>, 2015-2017.
+# Aviary.pl <community-poland mozilla org>, 2014-2017.
+#
 msgid ""
 msgstr ""
 "Project-Id-Version: pybliographer\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2016-08-21 16:17+0200\n"
-"PO-Revision-Date: 2016-08-21 16:18+0200\n"
+"POT-Creation-Date: 2017-04-30 19:34+0200\n"
+"PO-Revision-Date: 2017-04-30 19:35+0200\n"
 "Last-Translator: Piotr Drąg <piotrdrag gmail com>\n"
 "Language-Team: Polish <community-poland mozilla org>\n"
 "Language: pl\n"
@@ -322,7 +322,7 @@ msgstr "Brak wyników wyszukiwania"
 
 #. error
 #: ../Pyblio/GnomeUI/Document.py:523
-msgid "An error occured during Medline Query"
+msgid "An error occurred during Medline Query"
 msgstr "Błąd podczas korzystania z bazy Medline"
 
 #. get a new file name
@@ -381,7 +381,7 @@ msgstr ""
 
 #: ../Pyblio/GnomeUI/Document.py:741
 msgid ""
-"An internal error occured during saving\n"
+"An internal error occurred during saving\n"
 "Try to Save As..."
 msgstr ""
 "Błąd wewnętrzny podczas zapisywania\n"
@@ -726,7 +726,7 @@ msgid "[Key Value]"
 msgstr "[Wartość klucza]"
 
 #: ../Pyblio/GnomeUI/Utils.py:203
-msgid "The following errors occured:\n"
+msgid "The following errors occurred:\n"
 msgstr "Wystąpiły następujące błędy:\n"
 
 #: ../Pyblio/GnomeUI/__init__.py:45
@@ -989,7 +989,7 @@ msgid "Expert Search"
 msgstr "Zaawansowane wyszukiwanie"
 
 #: ../Pyblio/GnomeUI/glade/sort.glade.h:1
-msgid "Select sort criterions"
+msgid "Select sort criteria"
 msgstr "Kryteria sortowania"
 
 #: ../Pyblio/GnomeUI/glade/sort.glade.h:2