Added a way to remove SuperModel resources to fix ladder tab refreshing.

app/models/SuperModel.coffee

@@ -16,13 +16,13 @@ module.exports = class SuperModel extends Backbone.Model
   # retries, progress, and filling the cache. Note that the resource it passes back will not
   # necessarily have the same model or collection that was passed in, if it was fetched from
   # the cache.
-  
+
   report: ->
     # Useful for debugging why a SuperModel never finishes loading.
     console.info "SuperModel report ------------------------"
     console.info "#{_.values(@resources).length} resources."
     unfinished = []
-    for resource in _.values(@resources)
+    for resource in _.values(@resources) when resource
       console.info '\t', resource.name, "loaded", resource.isLoaded
       unfinished.push resource unless resource.isLoaded
     unfinished
@@ -128,6 +128,9 @@ module.exports = class SuperModel extends Backbone.Model
     @storeResource(res, value)
     return res
 
+  removeModelResource: (modelOrCollection) ->
+    @removeResource _.find(@resources, (resource) -> resource?.model is modelOrCollection)
+
   addRequestResource: (name, jqxhrOptions, value=1) ->
     @checkName(name)
     res = new RequestResource(name, jqxhrOptions, value)
@@ -153,11 +156,20 @@ module.exports = class SuperModel extends Backbone.Model
     @denom += value
     _.defer @updateProgress if @denom
 
+  removeResource: (resource) ->
+    return unless @resources[resource.rid]
+    @resources[resource.rid] = null
+    --@num if resource.isLoaded
+    --@denom
+    _.defer @updateProgress
+
   onResourceLoaded: (r) ->
+    return unless @resources[r.rid]
     @num += r.value
     _.defer @updateProgress
 
   onResourceFailed: (source) ->
+    return unless @resources[r.rid]
     @trigger('failed', source)
 
   updateProgress: =>

app/views/play/ladder/ladder_tab.coffee

@@ -153,7 +153,9 @@ module.exports = class LadderTabView extends CocoView
     @supermodel.resetProgress()
     @ladderLimit ?= parseInt @getQueryVariable('top_players', 20)
     for team in @teams
-      @leaderboards[team.id]?.destroy()
+      if oldLeaderboard = @leaderboards[team.id]
+        @supermodel.removeModelResource oldLeaderboard
+        oldLeaderboard.destroy()
       teamSession = _.find @sessions.models, (session) -> session.get('team') is team.id
       @leaderboards[team.id] = new LeaderboardData(@level, team.id, teamSession, @ladderLimit)
       @leaderboardRes = @supermodel.addModelResource(@leaderboards[team.id], 'leaderboard', 3)