added sales create form with nested items create form; added items_attributes to strong params whitelist; trivial change to item model validation to allow nested creation
javascript to allow dynamic generation of additional items in nested form
Merge pull request #18 from HydraJax/views/sales

Views/sales
got paperclip working/modified views & config files to work with paperclip
removing files/changes that shouldn't be in this branch
removed un-needed file for this branch
resolved conflict
updated photo sizes in models
updated new sale show page to match master to resolve conflict
modified item show page/pic view