fix support of Open Sans Extrabold fonts

Author: archmoj

src/traces/scattermapbox/constants.js

@@ -23,8 +23,8 @@ var supportedFonts = [
     'Metropolis Thin',
     'Open Sans Bold Italic',
     'Open Sans Bold',
-    'Open Sans Extra Bold Italic',
-    'Open Sans Extra Bold',
+    'Open Sans Extrabold Italic',
+    'Open Sans Extrabold',
     'Open Sans Italic',
     'Open Sans Light Italic',
     'Open Sans Light',

src/traces/scattermapbox/convert.js

@@ -398,10 +398,8 @@ function getTextFont(trace) {
             else str += ' Thin';
         } else if(parts[0] === 'Open' && parts[1] === 'Sans') {
             str = 'Open Sans';
-
-            // N.B.Extra Bold is not supported although is listed as supported!
-            /* if(weight > 750) str += ' Extra Bold';
-            else */ if(weight > 650) str += ' Bold';
+            if(weight > 750) str += ' Extrabold';
+            else if(weight > 650) str += ' Bold';
             else if(weight > 550) str += ' Semibold';
             else if(weight > 350) str += ' Regular';
             else str += ' Light';