Get started with cujojs

* Plug in curl to load modules
* Put some starter code in main.js
* Set up bower to load modules into src/main/resources/static
* Configure maven to run bower install
Upgrade to Spring Boot 1.0.1.RELEASE
Converted from SDR repositories to cujojs's rest
Since JPA now properly links item-to-gallery, only need one PUT
Remove redundant delete operation
Remove extraneous Model from index
Simplify hypermedia endpoints

Using the PagingAndSortingRepository interface introduces {?paging,etc.}, which cujoJS can't handle. For now, swapped it over to CrudRepository to remove these extra options
Wire up cujoJS hateoas interceptor
Default to application/hal+json
Clean up and run with an established release of Spring Data REST