Use 'Edit' text instead of pencil emoji for URL edit button

templates/admin.html

@@ -279,7 +279,7 @@
                           data-name="{{ file.name | e }}"
                           data-zoom="{{ file.zoom | default(1.0) }}"
                           onclick="editPlaylistItem('{{ current_site }}', '{{ screen }}', this.dataset.name, this.dataset.zoom)">
-                    ✎
+                    Edit
                   </button>
                   {% endif %}