adding edit bundle for display of product bundles

consolidating a lot of cod in the collectionservice
reusing create-product-bundles for edit
Merge branch 'develop-4' of https://github.com/ten24/Slatwall into feature-4-collections
format the loaded items
fix for railo bug
fix to the collections service when loading only one item
Merge branch 'develop-4' of https://github.com/ten24/Slatwall into feature-4-collections
Merge pull request #2495 from ten24/feature-4-collections

Feature 4 collections