fetch missing milestones on project page

src/views/pages/project.coffee

@@ -28,27 +28,34 @@ module.exports = Ractive.extend
     # Should not happen...
     throw 500 unless project
 
-    # Does it have milestones already?
-    return @set('ready', yes) if project.milestones
-
-    # We are loading the milestones then.
+    # We don't know if we have all milestones, so fetch them.
     done = do system.async
 
+    findMilestone = (number) ->
+      _.find project.milestones or [], { number }
+
     fetchMilestones = (cb) ->
       milestones.fetchAll project, cb
 
     fetchIssues = (allMilestones, cb) ->
-      async.map allMilestones, (milestone, cb) ->
+      async.each allMilestones, (milestone, cb) ->
+        # Maybe we have this milestone already?
+        return cb null if findMilestone milestone.number
+        # Need to fetch the issues then.
         issues.fetchAll { owner, name, 'milestone': milestone.number }, (err, obj) ->
-          cb err, _.extend milestone, { 'issues': obj }
+          return cb err if err
+          # Save the milestone with issues.
+          project.push 'milestones', _.extend milestone, { 'issues': obj }
+          cb null
       , cb
 
+    # Run it.
     async.waterfall [
       # First get all the milestones.
       fetchMilestones,
       # Then all the issues per milestone.
       fetchIssues
-    ], (err, data) =>
+    ], (err) =>
       do done
       return mediator.fire '!app/notify', {
         'text': do err.toString
@@ -57,7 +64,5 @@ module.exports = Ractive.extend
         'ttl': null
       } if err
 
-      # Save the milestones.
-      @set
-        'project.milestones': data
-        'ready': yes
+      # Say we are ready.
+      @set 'ready', yes