Extend lists to bottom of frame in lists view

client/components/swimlanes/swimlanes.jade

@@ -18,7 +18,7 @@ template(name="swimlane")
         +addListAndSwimlaneForm
 
 template(name="listsGroup")
-  .swimlane.js-lists
+  .swimlane.list-group.js-lists
     if isMiniScreen
       if currentList
         +list(currentList)

client/components/swimlanes/swimlanes.styl

@@ -49,3 +49,6 @@
     .swimlane-header-menu
       position: absolute
       padding: 20px 20px
+
+.list-group
+  height: 100%