Don't copy fixLocale.js to dist folder.

Gruntfile.js

@@ -44,6 +44,8 @@ module.exports = function (grunt) {
             dist: {
                 src: [
                     '**',
+                    '*.xpi',
+		    '!fixLocale.js',
                     '!tests/*/**/*',
                     '!tests/*',
                     '!tests',
@@ -113,4 +115,4 @@ module.exports = function (grunt) {
     grunt.registerTask('build', ['execute:fixLocale','jshint', 'clean:dist', 'mkdir:dist', 'copy:dist', 'compress:dist']);
     grunt.registerTask('dist', ['']);
 
-};
+};