Always keep one shop tab open (don't toggle closed)

app/assets/javascripts/darkswarm/directives/tabset_ctrl.js.coffee

@@ -5,13 +5,15 @@ Darkswarm.directive "tabsetCtrl", (Tabsets, $location) ->
     selected: "@"
     navigate: "="
     prefix: "@?"
+    alwaysopen: "="
   controller: ($scope, $element) ->
     if $scope.navigate
       path = $location.path()?.match(/^\/\w+$/)?[0]
       $scope.selected = path[1..] if path
 
     this.toggle = (name) ->
-      Tabsets.toggle($scope.id, name)
+      state = if $scope.alwaysopen then 'open' else null
+      Tabsets.toggle($scope.id, name, state)
 
     this.select = (selection) ->
       $scope.$broadcast("selection:changed", selection)

app/views/shopping_shared/_tabs.html.haml

@@ -2,7 +2,7 @@
   - if tab[:show]
     = render "shopping_shared/tabs/#{tab[:name]}"
 
-.tabset-ctrl#shop-tabs{ navigate: 'true', selected: first_visible_tab, prefix: 'shop', ng: { cloak: true } }
+.tabset-ctrl#shop-tabs{ navigate: 'true', alwaysopen: 'true', selected: first_visible_tab, prefix: 'shop', ng: { cloak: true } }
   .tab-buttons
     .row
       - shop_tabs.each do |tab|