Update a few translation items

- Add Japanese as a selectable language
- Wrap a few missed strings in tr()
- Regenerate .pot files

qtlib/locale/qtlib.pot

@@ -107,6 +107,10 @@ msgstr ""
 msgid "Vietnamese"
 msgstr ""
 
+#: qtlib\preferences.py:39
+msgid "Japanese"
+msgstr ""
+
 #: qtlib\recent.py:54
 msgid "Clear List"
 msgstr ""

qtlib/preferences.py

@@ -36,6 +36,7 @@ def get_langnames():
         "pt_BR": tr("Brazilian"),
         "es": tr("Spanish"),
         "vi": tr("Vietnamese"),
+        "ja": tr("Japanese"),
     }