Center label baseline hack for IE11, Edge

(closes #3020)

css/map.css

@@ -1322,8 +1322,9 @@ text.pointlabel {
 }
 
 /* Opera doesn't support dominant-baseline. See #715 */
-.opera .linelabel-halo .textpath,
-.opera .linelabel .textpath {
+/* Safari 10 seems to have regressed too */
+.linelabel-halo .textpath,
+.linelabel .textpath {
   baseline-shift: -33%;
   dominant-baseline: auto;
 }

modules/svg/labels.js

@@ -15,6 +15,8 @@ import { utilDisplayName, utilEntitySelector } from '../util/index';
 
 export function svgLabels(projection, context) {
     var path = d3.geoPath().projection(projection),
+        detected = utilDetect(),
+        baselineHack = (detected.ie || detected.browser.toLowerCase() === 'edge'),
         rdrawn = rbush(),
         rskipped = rbush(),
         textWidthCache = {},
@@ -119,6 +121,7 @@ export function svgLabels(projection, context) {
         texts.enter()
             .append('text')
             .attr('class', function(d, i) { return classes + ' ' + labels[i].classes + ' ' + d.id; })
+            .attr('dy', baselineHack ? '0.35em' : null)
             .append('textPath')
             .attr('class', 'textpath');
 

modules/ui/init.js

@@ -2,12 +2,11 @@ import * as d3 from 'd3';
 import { d3keybinding } from '../lib/d3.keybinding.js';
 import { t, textDirection } from '../util/locale';
 import { tooltip } from '../util/tooltip';
-import { utilDetect } from '../util/detect';
-import { utilSetDimensions } from '../util/dimensions';
 
 import { svgDefs, svgIcon } from '../svg/index';
 import { modeBrowse } from '../modes/index';
 import { behaviorHash } from '../behavior/index';
+import { utilSetDimensions } from '../util/dimensions';
 
 import { uiAccount } from './account';
 import { uiAttribution } from './attribution';
@@ -39,10 +38,6 @@ export function uiInit(context) {
     function render(container) {
         var map = context.map();
 
-        if (utilDetect().opera) {
-            container.classed('opera', true);
-        }
-
         var hash = behaviorHash(context);
         hash();