Snag List, Round 2

The following are addressed in this patch:

- Event Products have an additional menu on the right nav that shows bookings
  - Bookings can be exported as an Excel sheet for printing
- CMS parent page fix
  - Pages that can be set as parent pages are now fixed a pre-defined set
  - Pages can now be assigned as a child of the What's On page
  - News views right nav is now dynamically generated to show child pages
 - /shop/account is no longer broken
- Taxons can now be deleted
  - Was related to jQuery 1.8 being silently upgraded to 1.9 in Spree 1.1.5. many other small JS breakages will also be resolved.