[Reorg] Make timeline-specific chart directive

Make a separate chart directive for drawing resource graphs in timelines.  This
is in preparation for a new plot bundle which will make a large number of
changes to the drawing API to support newly requested features.  By separating
code, there will be no impact to the timeline when the new plot features are
added.

platform/features/timeline/bundle.js

@@ -38,6 +38,7 @@ define([
     "./src/directives/MCTSwimlaneDrop",
     "./src/directives/MCTSwimlaneDrag",
     "./src/services/ObjectLoader",
+    "./src/chart/MCTTimelineChart",
     "text!./res/templates/values.html",
     "text!./res/templates/timeline.html",
     "text!./res/templates/activity-gantt.html",
@@ -67,6 +68,7 @@ define([
     MCTSwimlaneDrop,
     MCTSwimlaneDrag,
     ObjectLoader,
+    MCTTimelineChart,
     valuesTemplate,
     timelineTemplate,
     activityGanttTemplate,
@@ -556,6 +558,14 @@ define([
                     "depends": [
                         "dndService"
                     ]
+                },
+                {
+                    "key": "mctTimelineChart",
+                    "implementation": MCTTimelineChart,
+                    "depends": [
+                        "$interval",
+                        "$log"
+                    ]
                 }
             ],
             "services": [