Update translations for English and Icelandic languages, add URL description field, and update button labels. Added a huge clause into the README.md, calling this version 1.0 beta.

lang/translations_en.json

@@ -26,7 +26,11 @@
         "language_label": "Language:",
         "restart_required_title": "Restart Required",
         "restart_required_message": "You need to restart the application for the language changes to take effect.",
+        "column_url": "URL",
         "column_date": "Date",
-        "column_actions": "Actions"
+        "column_actions": "Actions",
+        "description_title": "URL Description",
+        "update_button": "Update",
+        "close_button": "Close"
     }
 }