New translations: Icelandic, Latvian, Malay, Occitan, Uzbek

Also re-run lupdate.

src/webui/www/public/preferences_content.html

@@ -329,16 +329,20 @@
       <option value="fr_FR">Français</option>
       <option value="de_DE">Deutsch</option>
       <option value="hu_HU">Magyar</option>
+      <option value="is">Íslenska</option>
       <option value="id">Bahasa Indonesia</option>
       <option value="it_IT">Italiano</option>
       <option value="nl_NL">Nederlands</option>
       <option value="es_ES">Español</option>
       <option value="ca_ES">Català</option>
       <option value="gl_ES">Galego</option>
+      <option value="oc">lenga d'òc</option>
       <option value="pt_BR">Português brasileiro</option>
       <option value="pt_PT">Português</option>
       <option value="pl_PL">Polski</option>
+      <option value="lv_LV">latviešu valoda</option>
       <option value="lt_LT">Lietuvių</option>
+      <option value="ms_MY">بهاس ملايو</option>
       <option value="cs_CZ">Čeština</option>
       <option value="sk_SK">Slovenčina</option>
       <option value="sl_SI">Slovenščina</option>
@@ -355,6 +359,7 @@
       <option value="da_DK">Dansk</option>
       <option value="bg_BG">Български</option>
       <option value="uk_UA">Українська</option>
+      <option value="uz@Latn">أۇزبېك</option>
       <option value="ru_RU">Русский</option>
       <option value="ja_JP">日本語</option>
       <option value="he_IL">עברית</option>