Move d3 imports out of global bundle (#3357)

More incremental progress towards reducing the size of the legacy JS
bundle and more precisely defining JS dependencies.

Author: williamjallen

resources/js/angular/controllers/overview.js

@@ -1,3 +1,6 @@
+import d3 from 'd3';
+import nv from 'nvd3';
+
 function makeLineChart(elementName, inputData, project, anchor, sort) {
   jQuery(function(){
 

resources/js/angular/directives/timeline.js

@@ -1,3 +1,6 @@
+import d3 from 'd3';
+import nv from 'nvd3';
+
 var timelineController =
   function TimelineChartController($http, $scope) {
     $scope.loading = true;

resources/js/angular/legacy.js

@@ -12,8 +12,6 @@ import 'angular-ui-sortable/dist/sortable.js';
 import 'as-jqplot/dist/jquery.jqplot.js';
 import 'as-jqplot/dist/plugins/jqplot.dateAxisRenderer.js';
 import 'as-jqplot/dist/plugins/jqplot.highlighter.js';
-import 'd3/d3.js';
-import 'nvd3/build/nv.d3.js';
 import './ui-bootstrap-tpls-0.14.2.min.js';
 import './tabNavigation.js';
 import './jquery.tablesorter.js';