Clearing backups of old models when saving new versions of versioned models.

app/templates/play/level/goals.jade

@@ -1,7 +1,7 @@
 ul#primary-goals-list
 div.goals-status
   strong(data-i18n="play_level.goals") Goals
-  span.spl.spr :
+  span.spr :
   span(data-i18n="play_level.success").secret.goal-status.success Success!
   span(data-i18n="play_level.incomplete").secret.goal-status.incomplete Incomplete
   span(data-i18n="play_level.timed_out").secret.goal-status.timed-out Ran out of time

app/views/editor/article/edit.coffee

@@ -81,7 +81,7 @@ module.exports = class ArticleEditView extends View
     @preview.focus() if window.focus
     @preview.onload = => @pushChangesToPreview()
     return false
-    
+
   openSaveModal: ->
     @openModalView(new SaveVersionModal({model: @article}))
 
@@ -101,6 +101,7 @@ module.exports = class ArticleEditView extends View
       @disableModalInProgress(modal)
 
     res.success =>
+      @article.clearBackup()
       modal.modal('hide')
       url = "/editor/article/#{newArticle.get('slug') or newArticle.id}"
       document.location.href = url

app/views/editor/level/save_view.coffee

@@ -76,7 +76,7 @@ module.exports = class LevelSaveView extends SaveVersionModal
       else if @level.isPublished() and not newModel.isPublished()
         newModel.publish()  # Publish any LevelComponents that weren't published yet
       formsToSave.push form
-    
+
     for model in modelsToSave
       if errors = model.getValidationErrors()
         messages = ("\t #{error.dataPath}: #{error.message}" for error in errors)
@@ -96,6 +96,8 @@ module.exports = class LevelSaveView extends SaveVersionModal
           forms.applyErrorsToForm($(form), JSON.parse(res.responseText))
         res.success =>
           modelsToSave = _.without modelsToSave, newModel
+          oldModel = _.find @supermodel.models, (m) -> m.get('original') is newModel.get('original')
+          oldModel.clearBackup()  # Otherwise looking at old versions is confusing.
           unless modelsToSave.length
             url = "/editor/level/#{@level.get('slug') or @level.id}"
             document.location.href = url

app/views/editor/thang/edit.coffee

@@ -66,7 +66,7 @@ module.exports = class ThangTypeEditView extends View
     raw = ("raw:#{name}" for name in raw)
     main = _.keys(@thangType.get('actions') or {})
     main.concat(raw)
-  
+
   afterRender: ->
     super()
     return unless @supermodel.finished()
@@ -326,7 +326,9 @@ module.exports = class ThangTypeEditView extends View
         image = @currentSprite.imageObject.image
         portraitSource = imageToPortrait image
         # bit of a hacky way to get that portrait
-      success = -> document.location.href = url
+      success = =>
+        @thangType.clearBackup()
+        document.location.href = url
       newThangType.uploadGenericPortrait success, portraitSource
 
   clearRawData: ->
@@ -419,4 +421,4 @@ imageToPortrait = (img) ->
   scaleY = 100 / img.height
   ctx.scale scaleX, scaleY
   ctx.drawImage img, 0, 0
-  canvas.toDataURL("image/png") 
+  canvas.toDataURL("image/png")