Add settings-driven theme and version metadata

api/translations/messages.en.po

@@ -21,6 +21,18 @@ msgstr "Logout"
 msgid "nav.language"
 msgstr "Language"
 
+msgid "nav.theme"
+msgstr "Theme"
+
+msgid "nav.theme_auto"
+msgstr "Auto"
+
+msgid "nav.theme_light"
+msgstr "Light"
+
+msgid "nav.theme_dark"
+msgstr "Dark"
+
 msgid "home.hero_title"
 msgstr "Forums"
 
@@ -115,7 +127,7 @@ msgid "auth.register_hint"
 msgstr "Register with an email and a unique username."
 
 msgid "footer.copy"
-msgstr "speedBB forum. Powered by API Platform and React-Bootstrap."
+msgstr "speedBB"
 
 msgid "form.title"
 msgstr "Title"