quest: add quest leader. only quest-leader can begin/abort. Abort

restores quest scroll to leader. Bug fixes on clearing quest
data (completion, abort, etc)

src/controllers/groups.js

@@ -417,16 +417,13 @@ questStart = function(req, res) {
   // TODO will this handle appropriately when people leave/join party between quest invite?
   _.each(group.members, function(m){
     var updates = {$set:{},$inc:{'_v':1}};
-    if (m == user._id)
+    if (m == group.quest.leader)
       updates['$inc']['items.quests.'+key] = -1;
     if (group.quest.members[m] == true) {
-      updates['$set']['party.quest.key'] = key;
-      updates['$set']['party.quest.progress'] = {up:0,down:0,collect:collected};
-      updates['$unset'] = {'party.quest.completed':1};
+      updates['$set']['party.quest'] = Group.cleanQuestProgress({key:key,progress:{collect:collected}});
       questMembers[m] = true;
     } else {
-      updates['$unset'] = {'party.quest.key':1};
-      updates['$set']['party.quest.progress'] = {};
+      updates['$set']['party.quest'] = Group.cleanQuestProgress();
     }
     parallel.push(function(cb2){
       User.update({_id:m},updates,cb2);
@@ -464,9 +461,10 @@ api.questAccept = function(req, res) {
     // Invite everyone. true means "accepted", false="rejected", undefined="pending". Once we click "start quest"
     // or everyone has either accepted/rejected, then we store quest key in user object.
     _.each(group.members, function(m){
-      if (m == user._id)
+      if (m == user._id) {
         group.quest.members[m] = true;
-      else
+        group.quest.leader = user._id;
+      } else
         group.quest.members[m] = undefined;
     });
 
@@ -493,14 +491,23 @@ api.questAbort = function(req, res, next){
   var group = res.locals.group;
   async.parallel([
     function(cb){
-      User.update({_id:{$in: _.keys(group.quest.members)}},{
-        $unset: {'party.quest.key':1},
-        $set:   {'party.quest.progress.collect':{}},
-        $inc:   {_v:1}
-      },cb);
+      User.update(
+        {_id:{$in: _.keys(group.quest.members)}},
+        {
+          $set: {'party.quest':Group.cleanQuestProgress()},
+          $inc: {_v:1}
+        },
+        {multi:true},
+        cb);
+    },
+    // Refund party leader quest scroll
+    function(cb){
+      var update = {$inc:{}};
+      update['$inc']['items.quests.' + group.quest.key] = 1;
+      User.update({_id:group.quest.leader}, update, cb);
     },
     function(cb) {
-      group.quest = {};
+      group.quest = {key:null,progress:{},leader:null};
       group.markModified('quest');
       group.save(cb);
     }