l10n update for occitan language (#3557)

* i18n Update : Add preference setting for delete toot modal

Adding a line for "Add preference setting for delete toot modal"

* i18n update for pin/unpin

Update to add two more translations

* i18n update to have the dates in plain occitan

* Removed the blank line

* %{selft} back in the translation

app/javascript/mastodon/locales/oc.json

@@ -27,8 +27,8 @@
   "column.notifications": "Notificacions",
   "column.public": "Flux public global",
   "column_back_button.label": "Tornar",
-  "column_header.pin": "Pin",
-  "column_header.unpin": "Unpin",
+  "column_header.pin": "Penjar",
+  "column_header.unpin": "Despenjar",
   "column_subheading.navigation": "Navigacion",
   "column_subheading.settings": "Paramètres",
   "compose_form.lock_disclaimer": "Vòstre compte es pas {locked}. Tot lo mond pòt vos sègre e veire los estatuts reservats als seguidors.",