[gnome-software] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit a32077b7e47c448b257407c4dc755ca1abb5712f
Author: Jordi Mas <jmas softcatala org>
Date:   Sat Jan 20 20:55:15 2018 +0100

    Update Catalan translation

 po/ca.po |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/po/ca.po b/po/ca.po
index bc9c98c..d8a7570 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -506,7 +506,7 @@ msgstr "Mostra el número de versió"
 
 #: src/gs-application.c:344
 msgid "translator-credits"
-msgstr "Jordi Mas i Hernàndez <jmas softcatala org>, 2013-2017"
+msgstr "Jordi Mas i Hernàndez <jmas softcatala org>, 2013-2018"
 
 #. TRANSLATORS: this is the title of the about window, e.g.
 #. * 'About Software' or 'About Application Installer' where the %s is
@@ -652,8 +652,9 @@ msgstr "Ordenat per valoració"
 
 #. Translators: A label for a button to sort apps by their rating.
 #: src/gs-category-page.ui:24
+#. N.T.: Ha de coincidir amb la traducció de "Sorted by Rating"
 msgid "Top Rated"
-msgstr "Més valorats"
+msgstr "Valoració"
 
 #. Translators: A label for a button to sort apps alphabetically.
 #: src/gs-category-page.ui:30 src/gs-editor.ui:296