Allowing reordering of levels in Campaign. Reversing CampaignEditor levels before save so that when the save magically reverses them again, the order is preserved.

app/views/editor/campaign/CampaignEditorView.coffee

@@ -266,6 +266,7 @@ module.exports = class CampaignEditorView extends RootView
 class LevelsNode extends TreemaObjectNode
   valueClass: 'treema-levels'
   @levels: {}
+  ordered: true
 
   buildValueForDisplay: (valEl, data) ->
     @buildValueForDisplaySimply valEl, ''+_.size(data)

app/views/editor/campaign/SaveCampaignModal.coffee

@@ -29,6 +29,18 @@ module.exports = class SaveCampaignModal extends ModalView
 
   onClickSaveButton: ->
     @showLoading()
+    @reverseLevelsBeforeSave()
     modelsBeingSaved = (model.patch() for model in @modelsToSave.models)
-    modelsBeingSaved = modelsBeingSaved
     $.when(_.compact(modelsBeingSaved)...).done(-> document.location.reload())
+
+  reverseLevelsBeforeSave: ->
+    # For some unfathomable reason, not in our code anywhere, the levels get reversed during the save somehow.
+    # Since we want to maintain their orders, we reverse them first, so that when they're reversed again, it's right.
+    # Yaaaay!
+    return unless campaign = _.find @modelsToSave.models, (m) -> m.constructor.className is 'Campaign'
+    levelsReversed = {}
+    levels = campaign.get 'levels'
+    levelIDs = _.keys(levels).reverse()
+    for levelID in levelIDs
+      levelsReversed[levelID] = levels[levelID]
+      campaign.set 'levels', levelsReversed