Hook up npm script target for jshint (#3916)

* Hook up npm script target for jshint

* Shrinkwrap ui dependencies

awx/ui/grunt-tasks/clean.js

@@ -2,5 +2,6 @@ module.exports = {
     options: { force: true },
     static: 'static/*',
     coverage: 'coverage/*',
-    tmp: '../../tmp'
+    tmp: '../../tmp',
+    jshint: 'coverage/jshint.xml'
 };

awx/ui/grunt-tasks/jshint.js

@@ -0,0 +1,11 @@
+module.exports = {
+    source: {
+        src: ['client/src/**/*.js', '*conf.js', '*.config.js', 'Gruntfile.js'],
+        options: {
+            reporter: 'jslint',
+            reporterOutput: 'coverage/jshint.xml',
+            jshintrc: true
+        }
+    },
+
+};