Revert "locales: stash under window.PlotlyConfig.locales instead of window.PlotlyLocales"

This reverts commit b4b20a7.

Author: antoinerg

Diff for: src/core.js

@@ -66,9 +66,9 @@ register([
 ]);
 
 // locales that are present in the window should be loaded
-if(window.PlotlyConfig && window.PlotlyConfig.locales) {
-    register(window.PlotlyConfig.locales);
-    delete window.PlotlyConfig.locales;
+if(window.PlotlyLocales && Array.isArray(window.PlotlyLocales)) {
+    register(window.PlotlyLocales);
+    delete window.PlotlyLocales;
 }
 
 // plot icons

Diff for: tasks/util/wrap_locale.js

@@ -7,8 +7,7 @@ var intoStream = require('into-stream');
 var constants = require('./constants');
 
 var prefix = 'var locale=';
-var suffix = ';window.PlotlyConfig = window.PlotlyConfig || {};';
-suffix += 'if(typeof Plotly === \'undefined\') {window.PlotlyConfig.locales = window.PlotlyConfig.locales || []; window.PlotlyConfig.locales.push(locale);} else {Plotly.register(locale);}';
+var suffix = ';if(typeof Plotly === \'undefined\') {window.PlotlyLocales = window.PlotlyLocales || []; window.PlotlyLocales.push(locale);} else {Plotly.register(locale);}';
 
 var moduleMarker = 'module.exports = ';