move lib/locale-* to lib/locales/* and update scripts accordingly

dist will stay flat, to make script and CDN use consistent

Author: alexcjohnson

lib/locale-af.js renamed to lib/locales/af.js

@@ -60,10 +60,10 @@ constants.partialBundlePaths.forEach(function(pathObj) {
 });
 
 // "Browserify" the locales
-var localeGlob = path.join(constants.pathToLib, 'locale-*.js');
+var localeGlob = path.join(constants.pathToLib, 'locales', '*.js');
 glob(localeGlob, function(err, files) {
     files.forEach(function(file) {
-        var outName = 'plotly-' + path.basename(file);
+        var outName = 'plotly-locale-' + path.basename(file);
         var outPath = path.join(constants.pathToDist, outName);
         wrapLocale(file, outPath);
     });

lib/locale-am.js renamed to lib/locales/am.js

@@ -29,7 +29,7 @@ else {
 
 function pullOneLocale(locale) {
     var pathToInput = path.join(pathToWCRegions, locale + '.js');
-    var pathToOutput = path.join(constants.pathToLib, 'locale-' + locale.toLowerCase() + '.js');
+    var pathToOutput = path.join(constants.pathToLib, 'locales', locale.toLowerCase() + '.js');
 
     fs.readFile(pathToInput, 'utf8', function(err, wcCode) {
         if(err) {