fix siesta files

Fix all of the file paths in the siesta directory. This was broken from moving the test stuff into a single directory.
Add renamed store and model to app.js requirements arrays

Prior to this commit, the list page was unable to properly handle list
elements because those resources had been renamed and were therefore
not available to Ext. This commit just reintroduces the model and
store for handling list elements (now named "VendorInventories" and
"VendorInventory" respectively) for handling list items to the app.js
requirement arrays.