[#73,view/timeline][m]: many improvements to timeline - now pretty functional.

* reload data on query updates
* attempting to guess start date and end date fields.
* avoid initting multiple times
* refactor to be cleaner

test/view-timeline.test.js

@@ -1,12 +1,46 @@
 module("View - Timeline");
 
-test('basics', function () {
+test('extract dates and timelineJSON', function () {
+  var dataset = recline.Backend.createDataset([
+    {'Date': '2012-03-20', 'title': '1'},
+    {'Date': '2012-03-25', 'title': '2'},
+  ]);
+  var view = new recline.View.Timeline({
+    model: dataset
+  });
+  equal(view.state.get('startField'), 'Date');
+
+  var out = view._timelineJSON();
+  var exp = {
+      'timeline': {
+        'type': 'default',
+        'headline': '',
+        'date': [
+          {
+            'startDate': '2012-03-20',
+            'endDate': null,
+            'headline': '2012-03-20',
+            'text': ''
+          },
+          {
+            'startDate': '2012-03-25',
+            'endDate': null,
+            'headline': '2012-03-25',
+            'text': ''
+          }
+        ]
+      }
+    };
+  deepEqual(out, exp);
+});
+
+test('render etc', function () {
   var dataset = Fixture.getDataset();
   var view = new recline.View.Timeline({
     model: dataset
   });
   $('.fixtures').append(view.el);
-  view.initTimeline();
+  view._initTimeline();
   assertPresent('.vmm-timeline', view.el);
   assertPresent('.timenav', view.el);
   assertPresent('.timenav', view.el);