Finixhed applying jsHint linting to js files. Created initial Gruntfile.js build script and package.json script for keeping track of required node modules.

awx/ui/static/js/helpers/Hosts.js

@@ -9,6 +9,8 @@
 
 /* jshint loopfunc: true */
 
+'use strict';
+
 angular.module('HostsHelper', [ 'RestServices', 'Utilities', 'ListGenerator', 'HostListDefinition',
                                 'SearchHelper', 'PaginationHelpers', 'ListGenerator', 'AuthService', 'HostsHelper',
                                 'InventoryHelper', 'RelatedSearchHelper', 'InventoryFormDefinition', 'SelectionHelper',