My Cards page development

* rename `findCards()` to `myBoards()`
* return model objects for Boards, Swimlanes, Lists, and Cards.
Previously created a data structure with limited properties.
* Sort the myBoards data structure according to the `sort` property
* add a `swimlane()` method in the cards model

models/cards.js

@@ -461,6 +461,10 @@ Cards.helpers({
     return Lists.findOne(this.listId);
   },
 
+  swimlane() {
+    return Swimlanes.findOne(this.swimlaneId);
+  },
+
   board() {
     return Boards.findOne(this.boardId);
   },