Add "deselect" tooltip to X buttons in selected features list

data/core.yaml

@@ -10,6 +10,7 @@ en:
     favorite: favorite
     list: list
     text: text
+    deselect: deselect
   toolbar:
     inspect: Inspect
     undo_redo: Undo / Redo

dist/locales/en.json

@@ -10,7 +10,8 @@
             "view_on": "view on {domain}",
             "favorite": "favorite",
             "list": "list",
-            "text": "text"
+            "text": "text",
+            "deselect": "deselect"
         },
         "toolbar": {
             "inspect": "Inspect",

modules/ui/selection_list.js

@@ -3,6 +3,7 @@ import { event as d3_event, select as d3_select } from 'd3-selection';
 import { modeSelect } from '../modes/select';
 import { osmEntity } from '../osm';
 import { svgIcon } from '../svg/icon';
+import { t } from '../util/locale';
 import { utilDisplayName, utilHighlightEntities } from '../util';
 
 
@@ -79,6 +80,7 @@ export function uiSelectionList(context) {
             enter
                 .append('button')
                 .attr('class', 'close')
+                .attr('title', t('icons.deselect'))
                 .on('click', deselectEntity)
                 .call(svgIcon('#iD-icon-close'));