less globals in litning

grunt.js

@@ -78,9 +78,6 @@ module.exports = function(grunt) {
         debug: true
       },
       globals: {
-        _: true,
-        Backbone: true,
-        '$': true,
         Raphael: true,
         require: true,
         console: true,

src/js/util/debug.js

@@ -1,3 +1,5 @@
+var _ = require('underscore');
+
 var toGlobalize = {
   Tree: require('../visuals/tree'),
   Visuals: require('../visuals'),

src/js/views/commandViews.js

@@ -1,3 +1,6 @@
+var _ = require('underscore');
+var Backbone = require('backbone');
+
 var CommandEntryCollection = require('../models/collections').CommandEntryCollection;
 var Main = require('../app');
 var Command = require('../models/commandModel').Command;

src/js/views/miscViews.js

@@ -1,4 +1,6 @@
 var GitError = require('../util/errors').GitError;
+var _ = require('underscore');
+var Backbone = require('backbone');
 
 var InteractiveRebaseView = Backbone.View.extend({
   tagName: 'div',