* Configured some domain objects to use second-level cache to improve
performance.
* Added pricePerUnit to Product
* Added commodityClass and to Requisition 
* Added isTemplate and isPublished to Requisition for stock requisition
templates
* Added parent/child relationship between requisition items to support
quantity changes, substitutions, and additions
* Added isRoot to Category to make the root category selection more
explicit (no more "ROOT" category)
* Added Localization domain to allow user to add localizations at
runtime
* Added InventorySnapshot to cache quantities for inventory browser
* Inventory browser performance improvements
* Dashboard performance improvements
* Root category 
* Improved show transaction (added local transfer)
* Megamenu improvements
* Allow user to transfer stock from one depot to another
* Changes to the non-stock requisition workflow