Remove unused templates: Basic and Muffin Rush
ASB templates: Allow Single-use items and equippable items
ASB templates: Change item => singleUseItem  Handlebars template
ASB templates: Change "equipped" classes to "owned" since they are assigned to the ownership indicators
Pirate Race: Use classes instead of direct DOM manipulation when showing \ hiding the different buttons.
- Change owned and equipped states to be via classes and specific CSS for those classes.
- Remove balance and equipping conditions from Handlebars markup
- Don't trigger and request unequipping.  This logic should be taken care of the SDK.
- Collapse previous item when a new one is expanded
- Fix iscroll bug in single-use categories
Refactor: remove "List" prefix from all view classes
ASB templates: DRY use of ExpandableIScrollCollectionView
ASB: Refactor header view and its states
DRY leaveStore function in all templates
ASB: Use Backbone.Babysitter for child views
Merge branch 'singleUse'