Refactor DeltaView to use view in template

app/templates/editor/delta.jade

@@ -1,4 +1,5 @@
 - var i = 0
+- var counter = view.constructor.deltaCounter;
 
 mixin deltaPanel(delta, conflict)
   - delta.index = i++
@@ -41,8 +42,8 @@ mixin deltaPanel(delta, conflict)
         +deltaPanel(delta.conflict, true)
 
 .panel-group(id='delta-accordion-'+(counter))
-  for delta in deltas
+  for delta in view.expandedDeltas
     +deltaPanel(delta)
-  if !deltas.length
+  if !view.expandedDeltas.length
     alert.alert-warning(data-i18n="delta.no_changes") No changes
     

app/views/editor/DeltaView.coffee

@@ -71,14 +71,8 @@ module.exports = class DeltaView extends CocoView
       if skip then skippedDeltas.push delta else newDeltas.push delta
     [newDeltas, skippedDeltas]
 
-  getRenderData: ->
-    c = super()
-    c.deltas = @expandedDeltas
-    c.counter = DeltaView.deltaCounter
-    DeltaView.deltaCounter += @expandedDeltas.length
-    c
-
   afterRender: ->
+    DeltaView.deltaCounter += @expandedDeltas.length
     deltas = @$el.find('.details')
     for delta, i in deltas
       deltaEl = $(delta)