Fixed NaN in ladder in case a player has never played before

app/templates/play/ladder/ladder_tab.jade

@@ -27,7 +27,7 @@ div#columns.row
               a(href="/play/level/#{level.get('slug') || level.id}/?team=#{team.otherTeam}&opponent=#{session.id}")
                 span(data-i18n="ladder.fight") Fight!
                 
-        if !inTheTop && ! me.get('anonymous')
+        if !inTheTop && ! me.get('anonymous') && team.leaderboard.hasSubmitted()
           tr(class="active")
             td(colspan=4).ellipsis-row ...
           for session in team.leaderboard.nearbySessions()

app/views/play/ladder/ladder_tab.coffee

@@ -80,7 +80,10 @@ class LeaderboardData
   
   inTopSessions: ->
     return me.id in (session.attributes.creator for session in @topPlayers.models)
-    
+
+  hasSubmitted: =>
+    return 'totalScore' in @session
+
   nearbySessions: ->
     return unless @session
     l = []