Remove sidebar key trap (close #7770)

css/80_app.css

@@ -2634,15 +2634,6 @@ img.tag-reference-wiki-image {
     */
 }
 
-/* hidden field to prevent user from tabbing out of the sidebar */
-input.key-trap {
-    height: 0px;
-    width: 0px;
-    padding: 0px;
-    border: 1px solid rgba(0,0,0,0);
-}
-
-
 /* add tag, add relation buttons */
 .add-row {
     display: flex;

modules/ui/entity_editor.js

@@ -112,24 +112,6 @@ export function uiEntityEditor(context) {
             body.call(section.render);
         });
 
-        body
-            .selectAll('.key-trap-wrap')
-            .data([0])
-            .enter()
-            .append('div')
-            .attr('class', 'key-trap-wrap')
-            .append('input')
-            .attr('type', 'text')
-            .attr('class', 'key-trap')
-            .on('keydown.key-trap', function() {
-                // On tabbing, send focus back to the first field on the inspector-body
-                // (probably the `name` field) #4159
-                if (d3_event.keyCode === 9 && !d3_event.shiftKey) {
-                    d3_event.preventDefault();
-                    body.select('input').node().focus();
-                }
-            });
-
         context.history()
             .on('change.entity-editor', historyChanged);