Don't prevent default tabbing to elements (re: #8004)

modules/ui/fields/input.js

@@ -80,7 +80,6 @@ export function uiFieldText(field, context) {
 
             buttons.enter()
                 .append('button')
-                .attr('tabindex', -1)
                 .attr('class', function(d) {
                     var which = (d === 1 ? 'increment' : 'decrement');
                     return 'form-field-button ' + which;
@@ -106,7 +105,6 @@ export function uiFieldText(field, context) {
 
             outlinkButton.enter()
                 .append('button')
-                .attr('tabindex', -1)
                 .call(svgIcon('#iD-icon-out-link'))
                 .attr('class', 'form-field-button foreign-id-permalink')
                 .attr('title', function() {

modules/ui/fields/localized.js

@@ -219,7 +219,6 @@ export function uiFieldLocalized(field, context) {
         translateButton = translateButton.enter()
             .append('button')
             .attr('class', 'localized-add form-field-button')
-            .attr('tabindex', -1)
             .call(svgIcon('#iD-icon-plus'))
             .merge(translateButton);
 

modules/ui/fields/wikidata.js

@@ -94,7 +94,6 @@ export function uiFieldWikidata(field, context) {
             .append('button')
             .attr('class', 'form-field-button wiki-link')
             .attr('title', t('icons.view_on', { domain: 'wikidata.org' }))
-            .attr('tabindex', -1)
             .call(svgIcon('#iD-icon-out-link'))
             .on('click', function() {
                 d3_event.preventDefault();
@@ -131,7 +130,6 @@ export function uiFieldWikidata(field, context) {
             .append('button')
             .attr('class', 'form-field-button')
             .attr('title', t('icons.copy'))
-            .attr('tabindex', -1)
             .call(svgIcon('#iD-operation-copy'))
             .on('click', function() {
                 d3_event.preventDefault();

modules/ui/fields/wikipedia.js

@@ -128,7 +128,6 @@ export function uiFieldWikipedia(field, context) {
     link = link.enter()
       .append('button')
       .attr('class', 'form-field-button wiki-link')
-      .attr('tabindex', -1)
       .attr('title', t('icons.view_on', { domain: 'wikipedia.org' }))
       .call(svgIcon('#iD-icon-out-link'))
       .merge(link);