Renames get,set,shipping methods to get,set,costs
Fixes some names
Renames shipping to costs on the data base
Merge pull request #319 from nsendetzky/master

Fixes JSLint warnings
Adds setup tasks for renaming shipping to costs
Fixes predependency and execution order
Merge pull request #318 from doleiynyk/2013-10-08_Renaming_shipping_to_costs

Renames shipping to costs in price item and database tables
Fixes renaming shipping to costs in the admin interface
Merge pull request #320 from doleiynyk/2013-10-08_Renaming_shipping_to_costs

Fixes renaming shipping to costs in the admin interface